If my radius is 10 what is my circumference

Answers

Answer 1

Answer:

Radius, r = 10 cm

Radius, r = 10 cmWe know, Circumference = 2πr=2×π×10=20π cm

The circumference of the circle is

20π cm or about 62.8 cm.

Here's how I did it:

The formula for a circumference of a circle is 2πr , where r is the radius. We can plug our known value of the radius ( 10 cm) into the formula and solve.

2π 10=20π cm or about 62.8 cm.

Step-by-step explanation:

The radius is half as long as the diameter, so the diameter can be thought of as 2r. Keeping this in mind, you can write down the formula for finding the circumference of a circle given the radius: C = 2πr. In this formula, "r" represents the radius of the circle.

Hope it is helpful....


Related Questions

Angie has already written 19 pages, and she expects to write 1 page for every additional
hour spent writing. How many hours will Angie have to spend writing this week in order to
have written a total of 28 pages?

Answers

Answer:

[tex]9[/tex]

Step-by-step explanation:

[tex]28 - 19 = 9[/tex]

Answer:
9 hours

Explanation:
What we know:
- Angie has already written 19 pages
- Angies writes 1 page per hour

First, we can create the following equation to model this scenario:

Let x be equal to the number of hours that pass.
Total number of pages=1x+19

Now, because Angie wants to write 28 pages in total, we can plug that into the left side of the equation and solve for x, the number of hours.

28=1x+19
Subtract both sides by 19
28-19=1x+19-19
9=1x
x=9

Therefore, Angie would have to spend 9 hours to write a total of 28 pages.

I hope this helps!

I don’t understand can someone help me please

Answers

Answer:

25

Step-by-step explanation:

In this it's going to be pretty simple.

[tex]b^{2}[/tex] is going to be -3 * -3 = 9

When you have a square you multiply the number by itself.

So

9 - 4 * 1 * -4

here you have to remember order of operations.

Please - Parens

Excuse - Exponents

My - Multiplication

Dear - Division

Aunt - Addition

Sally - Subtraction.

Multiplication and Division are done at the same time left to right

Addition and Subtraction are done at the same time left to right.

So

9 - 4 * 1 * -4

You do the multiplication first.

4*1 = 4

4 * -4 = -16

Now you have

9 - - 16

This turns into

9 + 16

your answer is 25.

please help!!! Ill give brainliest

Answers

Answer:

the answer is C

you will calculate the area of the wall and also the window. Then you subtract the area of the window from the wall. the answer is 152 ft square

Which equation can be represented by the model shown



please help me giving 25 points

Answers

i am almost sure it’s b

When the model train goes once around the track, about how far does is travel?
3 ft
7 ft

Answers

Answer:

I think the answer is the train travels about 23.42

Sue is making a square blanket. She has 169 square feet of fabric for the blanket. How long will one side measure when she completes the blanket?

Answers

Answer:

13

Step-by-step explanation:

Area = 169

Square Blanket Area =  169

expand: x(3 + 9). please

Answers

Answer:

x(3 + 9) = 3x + 9x = 12x

Step-by-step explanation:

...........

Amy came up with a list of 28 good deeds she could perform around the house. She wants to do the same number of good deeds each day for the next 7 days to complete her list. How many good deeds will Amy do each day?

Answers

Answer: 4 deeds per day

Step-by-step explanation: 7 times 4 is 28

convert 1 4/5 into an improper fraction

Answers

9/5 is the answer yea

Answer:

9/5

Step-by-step explanation:

I hope this helps im pretty sure its correct

Please help me ................

Answers

Answer: AAS

Step-by-step explanation:

A juice company currently sells juice in gallon-size containers but wants to diversify to provide quart-size containers. If the company produces the number of gallons of juice every quarter given in the table, how many quarts will be produced in the first quarter?

The company will produce quarts of juice in first quarter.

Answers

Answer:

Depends on how many gallojs but 4 quarts per gallon

Step-by-step explanation:

Answer:

it is 24

Step-by-step explanation:

I just know it cuz I did it. hope it helps u :)

Is this expression equivalent to 1.5?

0.15 x 100

Answers

False

We can simplify the expression to be sure: 100 * 0.15 = 15

Answer:

No

Step-by-step explanation:

You can do this in two ways-

You can multiply 0.15 and 100, and you will get 15.

-OR-

You can move the decimal points two places to the right since 100 has two zeros. (You could move it to the right three if it were 1000 because it has three 0s)

Plzzzzzz help meeee plz I am timed

Answers

Answer:

multiplication property of equality. Hope this help and maybe a brainlist?

Step-by-step explanation:

Answer:

multiplication property of equality

Step-by-step explanation:

d/10=12

Multiply both sides by the equation by 10

10× d/10=10×12

Reduce the numbers by the greatest common factor which is 10

d=10×12

Multiply 10 and 12

d=120

So using multiplication to solve this equation

write an expression equivalent to 6 - 2x +5+ 4x that only has two terms

Answers

Answer:23

Step-by-step explanation:

Please don't steal points I need help :(

Answers

Answer:

I think its C

Step-by-step explanation:

Hello I need help
100ײ×100x²

Answers

Answer:

Today: Friday, 12th Feb 2021

10.11 PM

_______________________

[tex] \rm 100 {x}^{2} \times 100{x}^{2} [/tex]

[tex] \rm = (100 \times 100)^{2 + 2} [/tex]

[tex] {\boxed{\boxed{ \rm = 10000x^{4} }}}[/tex]

-

[tex]{\boxed{\boxed{ \rm \pink{i} \: \blue{hope} \: \orange{this} \: \pink{help} \: \blue{you} \: : )}}}[/tex]

Answer:

100ײ×100x²=100×100×x²×x²=10000x⁴ is your answer

Which of the following is a statistical question? A. How many pets do each of the students in my math class have? B. How many miles did I run today? C. How much does my cat weigh? D. How many students are in my math class?

Answers

I think the answer is B

Answer:

Okay so the answer is not B. How many miles did i run today.

Step-by-step explanation:

I need help with this is this complementary or supplementary or nither

Answers

Complementary. They add to 90 (right angle). Supp. adds to 180 (straight angles).

The surface area of a cube is 216x4 square units. The length of each
edge of the cube is
(216/6 x^4) 1/2
units. Which of these is equivalent to
the length of each edge of the cube?
no

Answers

tep-by-step explanation:

76/9870

Suppouse f(x)=x^2 and g(x)=(2x)^2. Which statement best compares the graph of g(x) with the graph of f(x)

Answers

Answer:

g(x) is f(x) stretched vertically by a factor of 4

Step-by-step explanation:

Since g(x) = 4 x^2, the graph of g(x) is a vertically stretched (by a factor of 4) version of the graph of f(x).

What are the factors for 25?
If you answer thanks for helping!

Answers

Answer:

one and twenty-five and five

if u do one times twenty-five and then five times five

1, 5, 25

The factors are all the numbers that could be used to multiply together to equal 25. 1×25=25, and 5×5=25.

Nick has an album that holds 800 photos. Each page of the album holds 8 photos.
If 22​% of the album is​ empty, how many pages are filled with photos​?

Answers

78 Pages are filled with photos because you do 800÷8 and you get 100 pages then since it says 22% of the album is empty since the album has 100 pages it makes it easy and you subtract 22 from 100 therefore you get 78 pages that are filled

Answer:

78 pages

Step-by-step explanation:

Find out 22% using 1% of the number of photos the album can hold.

100% = 800

1% = 800 ÷ 100 = 8

22% = 8 x 22 = 176

800 - 176 = 624

The album has 624 photos.

If 8 photos can create a page...

624 ÷ 8 = 78 pages

-3x-5y=-7 -4x+5y=14 solve by elimination

Answers

Answer:

es 3/54 eso da My brother

What is the area of the figure?



26 ft 2
18 ft 2
32 ft 2
24 ft 2

Answers

Answer:

[tex]24ft^{2}[/tex]

Step-by-step explanation:

If you break the shapes into two sections you get

2 × 4 = 8 & 8 × 2 = 16

16 + 8 = 24

good luck, i hope this helps :)

It's 26ft2.....................

Please solve, will mark brainliest

Answers

Answer: I'm late but do you still need the answer?

Step-by-step explanation:

HELP PLEASE WILL PICK BRAINLEST IF I ANSWER CORRECTLY!
the bubble thats in igonore it!

Answers

Answer:

4. (d, the last one)

5. (a, the first one)

Step-by-step explanation:

4 is the last one and 5 is the last one

Find the sum 9/10 + 9/100 as a fraction.

Answers

Answer: 99/100

Step-by-step explanation:

9/10 + 9/100 = 0.99 We just need to convert 0.99 as a fraction, converted to a fraction it is 99/100.  Hope I helped!

Which of the following is not true about the inverse of f (x) = = 3x+5
2

Answers

Answer Before defining the inverse of a function we need to have the right mental image of function.

Consider the function f(x) = 2x + 1. We know how to evaluate f at 3, f(3) = 2*3 + 1 = 7. In this section it helps to think of f as transforming a 3 into a 7, and f transforms a 5 into an 11, etc.

Now that we think of f as "acting on" numbers and transforming them, we can define the inverse of f as the function that "undoes" what f did. In other words, the inverse of f needs to take 7 back to 3, and take -3 back to -2, etc.

Let g(x) = (x - 1)/2. Then g(7) = 3, g(-3) = -2, and g(11) = 5, so g seems to be undoing what f did, at least for these three values. To prove that g is the inverse of f we must show that this is true for any value of x in the domain of f. In other words, g must take f(x) back to x for all values of x in the domain of f. So, g(f(x)) = x must hold for all x in the domain of f. The way to check this condition is to see that the formula for g(f(x)) simplifies to x.

g(f(x)) = g(2x + 1) = (2x + 1 -1)/2 = 2x/2 = x.

This simplification shows that if we choose any number and let f act it, then applying g to the result recovers our original number. We also need to see that this process works in reverse, or that f also undoes what g does.

f(g(x)) = f((x - 1)/2) = 2(x - 1)/2 + 1 = x - 1 + 1 = x.

Letting f-1 denote the inverse of f, we have just shown that g = f-1.

Definition:

Let f and g be two functions. If

f(g(x)) = x and g(f(x)) = x,

then g is the inverse of f and f is the inverse of g.

Exercise 1:

Return to Contents

Finding Inverses

Example 1. First consider a simple example f(x) = 3x + 2.

The graph of f is a line with slope 3, so it passes the horizontal line test and does have an inverse.

There are two steps required to evaluate f at a number x. First we multiply x by 3, then we add 2.

Thinking of the inverse function as undoing what f did, we must undo these steps in reverse order.

The steps required to evaluate f-1 are to first undo the adding of 2 by subtracting 2. Then we undo multiplication by 3 by dividing by 3.

Therefore, f-1(x) = (x - 2)/3.

Steps for finding the inverse of a function f.

Replace f(x) by y in the equation describing the function.

Interchange x and y. In other words, replace every x by a y and vice versa.

Solve for y.

Replace y by f-1(x).

Example 2.  f(x) = 6 - x/2

Step 1 y = 6 - x/2.

Step 2 x = 6 - y/2.

Step 3 x = 6 - y/2.

y/2 = 6 - x.

y = 12 - 2x.

Step 4 f-1(x) = 12 - 2x.

Step 2 often confuses students. We could omit step 2, and solve for x instead of y, but then we would end up with a formula in y instead of x. The formula would be the same, but the variable would be different. To avoid this we simply interchange the roles of x and y before we solve.

Example 3.  f(x) = x3 + 2

This is the function we worked with in Exercise 1. From its graph (shown above) we see that it does have an inverse. (In fact, its inverse was given in Exercise 1.)

Step 1 y = x3 + 2.

Step 2 x = y3 + 2.

Step 3 x - 2 = y3.

(x - 2)^(1/3) = y.

Step 4 f-1(x) = (x - 2)^(1/3).

Exercise 3:

Graph f(x) = 1 - 2x3 to see that it does have an inverse. Find f-1(x). Answer

Step-by-step explanation:

pls brain list

In a group of 700 people only 5% of them have red hair how many people hade red hair

Answers

35 people have red hair. Do 700 times 0.05.

PLEASE HELP

Order the following numbers from least to greatest.

1.4, 1 1/3, 127/100

Answers

Answer:

11/3 is the answer

Step-by-step explanation:

devide it

I’d suggest turning them into decimals,

1.4 _ already a decimal

1 1/3 = 4/3 = 1.333(reoccurring)

127/100 = 1.27

From least to greatest:

127/100, 1 1/3, 1.4
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