What is the formula of area of circle when diameter is given?

Answers

Answer 1

Answer:

[tex]\pi (\frac{diameter}{2} )^{2}[/tex]

Step-by-step explanation:

The formula is pretty similar to the standard equation, π·r², since the diameter is just the radius times two.

Hope that helps! :)


Related Questions

if TSA of cuboid box is 486 cmsquare find its volume​

Answers

Answer:

It has 6 faces, So, each face has an area = 486/6 = 81 sq cm. Side of the cube =√81= 9 cm. Hence, volume of the cube = 9^3 = 729 cm^3.Jul 18, 2019

Step-by-step explanation:

Hope it's help

Hey ! Buddy

There's a mistake in your question it's not T.S.A of cuboid it is T.S.A of cube . Because it's not possible to find the length , breadth and height of cuboid without giving only it's Total Surface Area .

Question : -

If TSA of cube box is 486 cm square , find its volume .

Given : -

Total Surface Area ( T.S.A ) of cube is equal to 486 cm square .

To Find : -

Volume of cube

Concept : -

For solving such types of questions we must have knowledge of faces of shapes and formula for surface areas and volumes of three dimensional shapes .

Formula Used : -

Area of square = side²

Volume of cube = a³

Solving Question : -

We know that cube have 6 faces . So area of each faces is equal to :

[tex] \rightarrow \: \cancel\frac{486}{6} \: cm \: sq.[/tex]

Now , dividing 486 by 6 :

[tex] \rightarrow \: 81 \: cm \: sq.[/tex]

Therefore , each square faces of cuboid have area of 81 cm square .

Now , We know that area of square :

Side ²

s² = 81

s = √81

s = 9 cm

Therefore , side/edge of cube is of 9 cm ..

Now , finding volume of cube :

We know that volume of cube is equal to ,

9 × 9 × 9

81 × 9

729 cm³

Therefore , volume of cube is 729 cm³ .

#Keep Learning

The cost price of 12 candles is equal to the sellering price of 15 candles. Find the loss percent.

Answers

Answer: Let SP of 15 candles = Rs.100. CP of 12 candles = SP of 15 candles = Rs.100 CP of 15 candles = = Rs.125 Loss = CP – SP = 125 – 100 = 25 = 20% 10.

Step-by-step explanation: This was a simple answer also CP means sale price

What is the next time: 8:45, 6:15, 3:45, _______?

A) 11:15

B) 12:15

C) 1:15

D) 2:15

Answers

Answer:

A(11:15)

Step-by-step explanation:

3+3 is 6

then Is 6+2 so is 8 then ir repeats ats 3 Like 3 6 8 and then 11

I need this asap give me the right answer

Answers

Answer:

Its 320 i think its so many numbers my eyes cant keep up

Step-by-step explanation:

just add em all up

If 55% of a number is 132 and 25% of the same number is 60, find 80% of that number.

Answers

Answer:

  192

Step-by-step explanation:

It is always wise to look carefully at the question to see what information is given, and what information you are asked for. You are given two different fractions of the same number, and you want the value of a third fraction of that number. That third fraction is the sum of the other two.

__

The value of 80% of the number will be the sum of 55% and 25% of the number.

  n×80% = n×55% +n×25%

  n×80% = 132 +60

  n×80% = 192

80% of the number is 192.

_____

Additional comment

Your first clue that there may be something special about this problem lies in the fact that one fraction of a number is all you need in order to find any other fraction. Here, we're given two fractions (55% and 25%), so that is more information than we need. Why? Because it simplifies the problem to one of addition. No proportions need to be solved.

__

If you were interested, you could determine 100% of the number to be ...

  132/n = 55/100   ⇒   n = 132(100/55) = 240

or

  60/n = 25/100   ⇒   n = 60(100/25) = 240

Then ...

  0.80n = 0.80(240) = 192 . . . . 80% of the number

Or, you could write proportions for the 80% value:

  80%/55% = n/132   ⇒   n = 132(80/55) = 192 . . . . 80% of the number

  80%/25% = n/60   ⇒   n = 60(80/25) = 192 . . . . 80% of the number

__

"Look carefully" includes thinking about the ways the givens and the finds are related.

A babysitter charges an hourly rate. The equation y = 12x represents the relationship between hours of babysitting, x, and total pay, y, in
dollars.
What is the salary per hour for the babysitter?

Answers

salary : $12 per hour

Walnuts are priced
according to the chart
below.
POUNDS (LBS)
COST (S)
3
$7.77
5
$ 12.95
8
$20.72
What is price per pound for the
walnuts?
A.
$2.59
B. $3.86
C. $2.17
D. $3.07

Answers

I’m pretty sure it is A 2.59 because you want to find the unit rate so you divide 12.95 by 5 and get 2.59

Answer:

A. $2.59

Step-by-step explanation:

If you divide the costs by the pounds:
3/7.77 = 2.59
12.95/5 = 2.59
20.72/8 = 2.59
Therefore, the answers is $2.59
Hope this helps :)

Mary has $311.75 to convert into yen. the currency exchange she is using charges a surcharge of 6% when converting currency. about how many more yen will mary receive if she makes her trade on the day with the most favorable exchange rate than if she makes her trade on the day with the least favorable exchange rate? a. ¥1,125 b. ¥1,513 c. ¥1,609 d. ¥1,706

Answers

Mary will receive 1512.4931 more Yen if she makes her trade on the day with the most favorable exchange rate than that of the least favorable exchange rate.

What is the exchange rate?

It is the factor by which currency conversion of two countries is done.

The most Favorable day is Friday because the exchange rate on Friday is the highest.

So, Mary will receive on Friday= 311.75 x 92.7120 x 94/100

Mary will receive on Friday(a)=27168.788 Yen

The least Favorable day is Wednesday because the exchange rate on Wednesday is the least.

So, Mary will receive on Wednesday= 311.75 x 87.5507 x 94/100

So, Mary will receive on Wednesday(b)= 25,656.2949 Yen

Difference between (a) and (b) = 1512.4931 Yen

Hence, Mary will receive 1512.4931 more Yen if she makes her trade on the day with the most favorable exchange rate than if she makes her trade on the day with the least favorable exchange rate.

To get more about the exchange rate visit:

https://brainly.com/question/1366402

What decimal is equivalent to 85/99?

0.76
0.767676...
0.85
0.858585...

Answers

Answer:

The repeating decimal is 85/99 = 0.858585...

Step-by-step explanation:

A rational number in the form of a fraction can be represented as a decimal by dividing the numerator by the denominator. For example, this is how we get 0.75 = 3/4: (first screenshot)

Now let's divide 85.0000... by 99. Find enough decimal digits in the numerator so we can see whether the decimal terminates or starts to repeat. (second screenshot) Since the number 850 repeats itself, this is a repeating decimal.

Anne is on the chess team at her school. She wins a match 20% of the time. Design a simulation that will predict the probability of Anne winning two matches. to represent winning two chess matches with representing Anne winning a match. Perform the simulation times. Using this simulation, the probability of Anne winning two matches is about .

Answers

Using the binomial distribution, it is found that there is a 4% probability of Anne winning two matches.

What is the binomial distribution formula?

The formula is:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters are:

x is the number of successes.n is the number of trials.p is the probability of a success on a single trial.

In this problem:

She plays two matches, hence n = 2.She wins a match 20% of the time, hence p = 0.2.

The probability that he wins two matches is P(X = 2), hence:

[tex]P(X = 2) = C_{2,2}.(0.2)^{2}.(0.8)^{0} = 0.04[/tex]

4% probability of Anne winning two matches.

More can be learned about the binomial distribution at https://brainly.com/question/24863377

ASAPPPPP!!!!!!!!!!!!!!

Answers

Answer:

297 [tex]cm^{2}[/tex]

Step-by-step explanation:

area of triangle x 4 + area of rectangle

[tex]\frac{1}{2}[/tex] x 12 x 9 x 4+ 9 x 9

What is the surface area of the box?

Answers

Answer:

54cm²

Step-by-step explanation:

2(3x6) + 2(6x1) + 2(3x1)

= 54cm²

How many milliliters could a container with a volume of 154 cm cubed hold?
A. 0.154 ml
B. 1.54 ml
C. 154 ml
D. 15,540 ml

Answers

154 cm3 = 0,154 dm3 = 0,154 l = 154 ml

Mr bean contributed 500 naira to a business, Mr. Benson contributed 300 naira, and Mr. Robinson contributed 200 naira. what is Mr bean's share if they share a profit of 2000 naira according to the amount each contributed

Answers

Answer:

Mr Bean will get 1000 naira.

Step-by-step explanation:

They invested in the ratio of 5:3:2 , meaning that Mr Bean will get half the profit. 1/2 X 2000 = 1000

Condense the logarithmic expression using logarithmic properties.

3 log x + 2 log y - log y

Answers

Answer: [tex]log (x^3y )[/tex]

Step-by-step explanation:

First we want to make the coefficients of the log the exponents of what is in the log

[tex]3 log (x) + 2 log (y) - log (y)\\log (x^3) + log (y^2) - log (y)[/tex]

Now adding two log with the same base is the same as multiplying what you are taking the log of

[tex]log (x^3) + log (y^2) - log (y)\\log (x^3y^2) - log (y)[/tex]

Now subtracting two logs with the same base is the same as dividing what you are taking the log of

[tex]log (x^3y^2) - log (y)\\log (\frac{x^3y^2}{y} )[/tex]

Now we simplify

The [tex]y^2[/tex] cancels out the y in the denomiator

[tex]log (x^3y^2) - log (y)\\log (x^3y )[/tex]

Step-by-step explanation:

xlog3+ylog2-ylog

log3×log2 -ylog

log6-ylog

Three friends share 2 bags of trail mix equally.

What fraction of a bag of trail mix does each friend get?

Answers

Answer:I think that each friend would get 1.5/ 1  1/2.

Step-by-step explanation:

3 divided by 2 equals 1.5

2/5 g+3h -6 when g=10 h=6

Answers

hello!

let's evaluate this expression

[tex]\pmb{\displaystyle\frac{2}{5}g+3h-6 }[/tex]

[tex]\pmb{\displaystyle\frac{2}{5} *10+3(6)-6}[/tex]

[tex]\pmb{\displaystyle\frac{2}{5} *10+18-6}[/tex]

[tex]\pmb{\displaystyle\frac{2}{5} *10+12}[/tex]

Multiply:

[tex]\pmb{\displaystyle\frac{2}{5} *\frac{10}{1} =\frac{20}{5} =4}[/tex]

Final Step:-

[tex]\pmb{4+12}[/tex]

[tex]\pmb{16}[/tex]

======================================================

note:-

Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I'll comment and/or edit my answer :)

HELPP PLEASE!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Third one down |2s + 1| -3

Step-by-step explanation:

there is no value of s where it is valid

Is (3, 1) a solution to this system of equations?

3x + 3y = 12
12x + y = 13

Yes or no

Answers

Answer: No

Step-by-step explanation:

(3,1) is not a solution because when plugging in x=3 and y=1 to the second equation, you get: 12(3) + 1 = 13 → 36 + 1 = 13 → 37 = 13, which is false.

Jacob sells his motorbike for £112 making a loss of 12% on its original price. Work out its original price

Answers

Answer:

125,44

Step-by-step explanation:

Loss = 112÷100*12

=13,44

Therefore : 112 + 13%

=112 + 13,44

=125,44

Lots of points

Please help

i add a photo ​

Answers

C = 6*P

Use that formula and plug in the x-axis values for P and plot the results (C) on the graph
The answer is 6*p.
Thanks

!!!!!!!!!!!!!!!!!!!!!!!!!HELP!!!!!!!!!!!!!!! Find the slope of the line.

Answers

Answer:

3/1

Step-by-step explanation:

Make sure you know a few concepts first:

The point where the line crosses the y-axis (or vertical axis) is called the y-intercept.Slope is commonly taught using [tex]\frac{rise}{run}[/tex] as I will teach it here.First, find the y-intercept of the line. This line crosses the y-axis as (0,0), so that is the y -intercept.Find another point on the line, preferably where it crosses a whole-number coordinate (just for simplicity… you can use any point on the line). We will use the point (1,3). Counting in your head, count vertically from (0,0) until you are horizontal to the point (1,3) we chose earlier. Put the distance it took to reach that point on the top (numerator) of the fraction. Because it takes 3 counts to be horizontal, your fraction should look like [tex]\frac{3}{run}[/tex].Count horizontally until you reach the point (1,3). Put the number of units on the bottom (denominator) of the fraction. The number was 1 unit, so your finished fraction which is the slope is [tex]\frac{3}{1}[/tex].

Alternatively

Use the formula for slope from two points… [tex]\frac{x_{1} -y_1}{x_2-x_1}[/tex]Find two points on the line. We will use (0,0) and (1,3). Designate one point as 1 and the other as 2. We will choose (0,0) to be 1 and (1,3) to be 2.Plug in the points following the “key” you created: Let x₁ be the x coordinate from ordered pair 1, let y₁ be the y coordinate point from ordered pair 1, etc. Following this pattern, you should be set up like this: [tex]\frac{3-0}{1-0}[/tex]Subtract to get [tex]\frac{3}{1}[/tex] as your slope.

Will give brainiest!!!!
Jocelyn participates in three track events: the 200-meter sprint, the 400-meter hurdles, and the 800-meter run. She calculated the mean absolute deviation of her race times throughout the season in each event.


200-meter sprint: mean absolute deviation of 2.05


400-meter hurdles: mean absolute deviation of 2.82


800-meter run: mean absolute deviation of 1.9


In which event were her times the most spread out?



200 meter sprint


800 meter run


400 meter hurdles

Answers

Answer:

The awnser is 400 meter run

Step-by-step explanation:

i took the quiz

The mean absolute deviation shows that the event were her times the most spread out is C. 400 meter hurdles.

What is a mean absolute deviation?

It should be noted that the mean absolute deviation means the average distance that's between each data point and the mean.

In this case, the mean absolute deviation shows that the event were her times the most spread out is 400 meter hurdles. This was illustrated as it has has the highest mean absolute deviation when compared to others.

Learn more about mean absolute deviation on:

https://brainly.com/question/17381861

What value of x makes a true equivalent fraction statement. 3/x = 27/54

Answers

3/x=27/54

or,x×27=3×54

or,27x=162

or,x=162/27

or,x=6

Hope you will give me brainliest

This should be easy for me but I just can't get it right.
Please Help Me! ASAP! :) Thank you hope your day was alright.
Will try to mark Brainliest!

Answers

Answer:

1. 32

2. 47

3. See explanation for number 3 below

Step-by-step explanation:

All you have to do is simply add 17 to however old Titus is. So if he's 15 years old, you just simply have to do 15+17, which is 32. For number 3, I'm assuming that they just want an explanation for how you do this process, in which case, this explanation is the answer to number 3. If that's not what they're looking for in number 3, then I'm sorry. But I'm pretty sure that's what they want there.

HELP What is the surface area of the square pyramid?

Answers

Step-by-step explanation:

Answer

A = +2aUnderoute of by 4+h

a) a = base edge

b) h = height

pls vote me as a branliest

When Sally decided to run for class treasurer, she predicted how many votes she would get. After the election, Sally found out she had received 150 votes. She had predicted she would get 20% fewer votes than that. How many votes did Sally predict she would get?

Answers

Answer:

3000

because you need to dived it

Please help with this question I have been stuck on it for so long

Answers

Answer:

Step-by-step explanation:

If i is 300 times as much as k, then i=300k.

So we have k(something)=300k -> that something is 300

Solve for X. Leave your answer in the simplest radical form.
Image down below!
Someone please help me with this, I’ll give you brainlist and points!

Answers

Apply Pythagorean theorem

P²=10²-4²P²=100-16P²=84p=2√21

Again

x²=84-8²x²=84-64x²=20x≈√20=√4×5=2√5

Answer:

2√5

Step-by-step explanation:

The given pyramid is composed of two right angle triangles. Notice the triangles of the pyramid share a common side. With the help of it, we can figure out x

recall Pythagoras theorem

[tex] {a}^{2} + { b }^{2} = {c}^{2} [/tex]

Case-1: Finding the opposite side

here,

a=4c=10

To find:

b

now plug in the value of a and c in the formula respectively:

[tex] {4}^{2} + { b }^{2} = {10}^{2} \\ \implies {b}^{2} = {10}^{2} - {4}^{2} \\ \implies {b}^{2} = 84 \\ \implies \boxed{ b_{1} = 2\sqrt{21}}[/tex]

Case-2: Finding x

here,

[tex]b_1 \implies c=2\sqrt{21}[/tex]b=8a[tex]\implies[/tex] x

Utilizing Pythagoras theorem yields:

[tex] {x}^{2} + { 8}^{2} = {(2\sqrt{21})}^{2} \\ \implies {x}^{2} = {(2\sqrt{21})}^{2} - {8}^{2} \\ \implies {x}^{2} = 20\\ \implies \boxed{ x= 2\sqrt{5}}[/tex]

and we're done!

What is the approximate volume of the cone? Use 227
22
7
for π. Enter your answer in the box.

Answers

Answer:

132 cm³

Explanation:

[tex]\sf volume \ of \ cone = \dfrac{1}{3} \pi r^2h[/tex]

put radius: 3 cm, height: 14 cm, π as 22/7

[tex]\sf \rightarrow \dfrac{1}{3} *\dfrac{22}{7} * (3)^2(14)[/tex]

[tex]\sf \rightarrow 132 \ cm^3[/tex]

Other Questions
HELP PLEASE30 POINTS + BRAINLYEST!!!!!(no links please)A cylinder and a cone have the same diameter: 8 inches. The height of the cylinder is 3 inches. The height of the cone is 18 inches.Use pi = 3.14.What is the relationship between the volume of this cylinder and this cone? Explain your answer by determining the volume of each and comparing them. Show all your work. (10 points) 1. Earths plates are constantly moving.What evidence do scientists use to support this claim? (Hint: You may choose more than one answer.)earthquakesearthquakesvolcanic activityvolcanic activityGPS measurementsGPS measurementsThey watch the plates move with their eyes.They watch the plates move with their eyes. what is the value of x In the diagram below,EF is parallel to BC. IF BC is the twice length of ED,BD=36 and EF=14, find the length of ED. Figure are not necessary drawn to scale. State your answer in simplest ratio form if necessary. Use Lewis symbols to predict the formula for thecompound that forms between magnesium andnitrogen 40% of 400- how to solve please (thanks How did the whites control the blacks in apartheid? The smiley face has a radius of 8cm. What is the area of the smiley face?16 sq. feet50.24 sq. feet128 sq. feet200.96 sq. feet Los enunciados Ha nevado: estoy contentsimo y Ha nevado; estoy contentsimo:a) Dicen exactamente lo mismo. b) Expresan ideas distintas: en el primer caso, expresa que estoy contentsimo porque ha nevado; en el segundo, que estoy contentsimo, pero no necesariamente por la nieve. c) Expresan ideas distintas: en el primer caso, se establece la consecuencia que me produce la nieve; en el segundo, la causa. d) Expresan ideas distintas, pero por causas distintas a las indicadas en b) y c) What sequence of events led the United States to a declaration of war? A figure is made up of a triangle and a rectangle. The triangle has a height of 8.5 inches and a base of 10 inches. The rectangle has dimensions of 9 inches10 inches. What is the area of the figure?Group of answer choices132.5 in133.5131.5130.5 07.01 Are You Awake?Article Frame TemplateAuthor: Aaryn king Instructor: Date:__________The ArtifactCamp Meeting Song Lyrics ArtifactDescription of Conversion ExperiencTell our audience about the artifact.An amazing historical Camp Song was discovered in an attic.It is a ________________________________. The Camp meeting song wascreated by chorister in the year 1830.It was made because To be sung at camp meetings, during revivals of religion, and on other occasions.People who would have read or studied this item at the time it was created were religious people who thought _________________________________________________.It is worth studying today because__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.Discuss how the artifact relates to a major event in U.S. history.The event that this artifact best relates to was the Second Great Awakening.This happened around the years ___________________________________________________.One reason this event occurred was because____________________________________________________________________________________________________________________________________________________________.Tell me what happened during this event.People participated in this event through three main ways:____________________________________________________________________________________________________________________________________________________________________________________________________________________________________.Important people involved included:__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.Many participants were women because __________________________________________________________________________________________________________________________________________________________________________________________________________.Explain the meaning of "social reform." Discuss how this event relates to social reform. Give an example.Social reform is ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.Social reform relates to this event because ________________________________________________________________________________________________________________________________________________________________________________________________________.An example of a social reform directly related to the ___________________ is ______________________________ because ________________________________________________________.What was another major event happening in the United States during this time?Another major U.S. event happening during this time was the ____________________________________________________________________________________________________________. what is the area of the triangle malamud and mohammed bought the same eight CD's but mohammed bought used CD's so each was half the price malamud paid. if the mean price malamud paid in $16 and the median is $16.50 , what are the mean and median prices for mohammed's CD's? The governor of Arkansas justified his refusal to allow integration of Central High School in Little Rock by claiming thatO the Little Rock School Board had decided against integration.O Arkansas was not bound by Supreme Court decisions.O he was acting to protect the public.O he had the support of the president. The Earth's biosphere is consists of A(only the water on Earth that is in its solid form.B(all of the Earth's water, including surface water, groundwater, snowcover, ice, and water in the atmosphere.C(the part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life.D(the solid part of the earth consisting of the crust and outer mantle. Explain the relationship between ones point of view and understanding spoken text there are different states of matter and each has a distinct characteristics. if ever you'll compare yourself to these states, what would you be and why?plss help me easy one here pls help thanks so much which of the following fractions is NOT equivalent to the others?A. 24/36B. 8/12C. 12/16D. 4/6