A circle is cut into congruent sections and arranged to form a figure that approximates a parallelogram. Find the approximate height of the figure when its area is 12.25π square centimeters.

A Circle Is Cut Into Congruent Sections And Arranged To Form A Figure That Approximates A Parallelogram.

Answers

Answer 1

Answer:

The height is 3.43 centimeters, approximately.

Step-by-step explanation:

Notice that there are 16 pieces from the circle, which means each sector has an angle of

[tex]\theta = \frac{360\°}{16}=22.5\°[/tex]

Where all sectors have equal area.

Now, the area of the whole circle is [tex]12.25 \pi \ cm^{2}[/tex], if we use the formula of its area, we'll find the radius of the circle

[tex]A= \pi r^{2}\\ 12.25\pi = \pi r^{2}\\ r=\sqrt{12.25} \approx 3.5[/tex]

Notice that each piece works as an isosceles triangle, because each side is the radius, that is, they have the same length. So far, we know the sides of the isosceles triangle and one internal angle.

To find the height of the one piece, we need to use trigonometric reasons, because the height divides a triangle in two equal right triangles.

[tex]cos(11.25\°)=\frac{h}{3.5}\\ h=3.5 \times cos(11.25 \°)\\h \approx 3.43[/tex]

Therefore, the height is 3.43 centimeters, approximately.


Related Questions

what is equivalent to (125^2/125^4/3)

Answers

Answer:

25

Step-by-step explanation:

Move 125^4/3 to the numerator using the negative exponent rule 1/b^n=b^-n.

125^2 x 125^4/3

Simplify the expression.

5^3(2/3)

Cancel the common factor of 3.

5^2

Raise 5 to the power of 2.

25

A line has a slope of 3/7. What is the slope of any line parallel to this line?
a) -7/3
b) 0
c) 3/7
d) 7/3

Answers

A line that is parallel will have the same slope, so the slope of the parallel line is 3/7

The slope of any line parallel to this line would be c) 3/7.

What are parallel lines?

Parallel lines are those lines that are equal distances apart and often of the same length. So, for the given slope where we have parallel lines, we can expect to have lines of the same slope. Thus we can arrive at 3/7.  

Note that parallel lines have the same slope. So, since the first slope is 3/7, we can expect the second to be the same thing.

Learn more about parallel lines here:

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PLEASE ANSWER !!!!!!!!!!!

12. Write a function rule in slope-intercept form for the statement: the output is one less than half of the opposite of the input.

Answers

Answer:

The function rule is:

[tex]y=-\frac{1}{2} x-1[/tex]

Step-by-step explanation:

We identify the output with the variable "y", the "input with the variable"x". Notice also that the "opposite of the input is "-x" (negative x), and therefore the words "the output is one less than half of the opposite of the input" translate into:

[tex]y=\frac{1}{2} (-x)-1\\y=-\frac{1}{2} x-1[/tex]

Please help me now plz I will mark you brainliest

Answers

Answer:

4.41

Step-by-step explanation:

We can use trig to solve for the missing side (specifically cosine).  cos(x)=adjacent side/hypotenuse.  We have the x value (which is the angle shown) which is 25.  We have the adjacent side of that angle which is 4.  We are solving for the hypotenuse (lets call that h).  When we plug in values into the equation cos(x)=adjacent/hypotenuse, we get cos(25)=4/h.  cos 25=0.9063.  So 0.9063=4/h.  Multiply both sides by h and we get 0.9063h=4.  Now divide 0.9063 on both sides to isolate h and we get 4.4135... but since you want hundredths, its 4.41

What percent of 145 is 82

Answers

Answer:

56.55

Step-by-step explanation:

The figure shown in the right is made up of a square and a circle. Find the perimeter of the shaded region.

A. 16+2π cm
B. 12+2π cm
C. 12+4π cm
D. 16+4π cm

Answers

Answer:

B. 12 + 2pi cm

Step-by-step explanation:

The shaded region is made up of 3 square sides and one half circle. The three square sides are each 4, which means that those altogether equal 12.

The circle's circumference can be found by using the equation c = (d)pi

The diameter is 4, so the whole circumference is 4pi. However, you only need half of a circle, which is represented by 2pi.

Add them all together, and you get 12 + 2pi cm.

Answer: i think B

Step-by-step explanation:

7^2 + 1 - 5 x 3 where do the parenthesis go if the value is 135

Answers

Answer:

(7²+(1-5))×3=

Step-by-step explanation:

Let's try this

(7²+(1-5))×3=

(49-4)×3=

45×3=

135

(Worked first try :o!)

A square is made using four rods of equal length joined end to end.
the perimeter of this square is 72 cm. Three of these rods are now joined end to end to make an equilateral triangle.
What is the perimeter of this equilateral triangle

Answers

Answer:54 cm

Step-by-step explanation:

Given

Rods are joined to form a square

Perimeter of square is [tex]72\ cm[/tex]

Suppose a is the length of each rod so

Perimeter is [tex]4 a[/tex]

[tex]\therefore 4a=72[/tex]

[tex]\Rightarrow a=\frac{72}{4}[/tex]

[tex]\Rightarrow a=18\ cm[/tex]

Now if rods are joined to form a square then

Perimeter is the sum of sides

Perimeter of (equilateral)triangle[tex]=3a[/tex]

[tex]\Rightarrow =3\times 18[/tex]

[tex]\Rightarrow =54\ cm[/tex]

Si: P(x+2)=2(x+2)^3 + x^2+4x +4 : Calcular P(3)

Answers

Answer:

Step-by-step explanation:

Measurements of a circle

Answers

Answer:

253 degree is the answer

2(q–8)<–10 solve for r

Answers

Answer:

q < 3

Step-by-step explanation:

2(q–8)<–10

Divide each side by 2

2/2(q–8)<–10/2

q-8 < - 5

Add 8 to each side

q-8+8 < - 5+8

q < 3

Answer:

[tex] = q < 3[/tex]

Step-by-step explanation:

[tex]2(q - 8) < - 10 \\ 2q - 16 < - 10 \\ 2q < - 10 +1 6 \\ 2q < 6\\ \frac{2q}{2} < \frac{6}{2} \\ = q < 3[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

If m<22 =122 what is m<5

Answers

Answer:

m = -5

Step-by-step explanation:

Step  1  :

Pulling out like terms/ factors

Add  5  to both sides of the equation :  

                     -m = 5

Multiply both sides of the equation by (-1) :  m = -5

Hope this helps.

What is the measure of angle a?​

Answers

Answer:

38°

Step-by-step explanation:

Using the Cosine rule in Δ ABC

cos A = [tex]\frac{b^2+c^2-a^2}{2bc}[/tex]

where a, b and c are the sides of the triangle.

Here a = 5, b = 3 and c = 7 , thus

cos A = [tex]\frac{3^2+7^2-5^2}{2(3)(7)}[/tex] = [tex]\frac{9+49-25}{42}[/tex] = [tex]\frac{33}{42}[/tex] , thus

∠ A = [tex]cos^{-1}[/tex] ([tex]\frac{33}{42}[/tex] ) ≈ 38°

the floor of a building consists of 2000 tiles which are rhombus shaped and each of is diagonal is 40 cm and 25 cm in length. find the total cost of polishing the floor, if the cost per m² is $5​.

WHAT IS THE TOTAL COST

ANSWER QUICK

Answers

Answer:

$2500 is the total cost.

Step-by-step explanation:

Area of rhombus = 40(25)/2=1000/2=500

500*5=2500

Therefore, $2500 is the total cost.

I hope this helped and have a good rest of your day!

Divide 55 in the ratio 3:2

Answers

Answer:

33 and 22

Step-by-step explanation:

total ratio is 5

55÷5 =11 ( ratio 1)

ratio 3 : 11x3 = 33

ratio 2 : 11x2 = 22

hope this helps

In geometry, the kissing number of a mathematical space is defined as the greatest number of non-overlapping unit spheres that can be arranged in that space such that they each touch a common unit sphere.

Is the explanation true or false?

Sorry bout the cringe btw... it’s my math problem.

I’ll mark brainleist if you anwser.

Answers

Answer:

this explanation is false

A carousel factory has 1252 carousel horses. 48 horse’s are placed on each carousel. How many carousel can the factory build?

Answers

Answer: they can build 26 Carousels.

Step-by-step explanation:

please help quickly !!!!

Answers

Answer:

8.4 * x = 23.94

Step-by-step explanation:

The numbers of gallons times the cost per gallon equals the total cost

8.4 * cost = 23.94

Let x be the cost

8.4 * x = 23.94

Answer:

A... 8.4x=23.94

From that equation, we can solve

Read and select the correct answer.

Sesenta ÷ tres =

30
20
10
40

Answers

Answer:

20

Step-by-ste

Answer:

20

Step-by-step explanation:

4. Kenneth needs to repaint a wall in his bathroom. The wall is 8 feet high and 14 feet long. Part of
the wall is covered with tile and he will not paint that part. The part of the wall covered by tile is 14
feet long and 42 inches high. Which expression could Kenneth use to find the area of the part of the
wall he needs to repaint?
a. 148-(42 + 8)
b. 14 * 8 - (42 * 14)
c. 148 -[(42 +12) * 14]
d. 2(14 + 8) -[(42 +12) + 14]

Answers

Answer:

96 * 144 - 168 * 42

Step-by-step explanation:

So the area of the wall is 96 * 144

And the area of the tiled part is 168 * 42

So it would be 96 * 144 - 168 * 42

What are the solutions of the equation: x2 – 1 = 15?
x = ± sqrt 14
x = ± sqrt 15
x = ±4
x = ±8

Answers

Answer:

x = ± 4

Step-by-step explanation:

Given

x² - 1 = 15 ( add 1 to both sides )

x² = 16 ( take the square root of both sides )

x = ± [tex]\sqrt{16}[/tex] = ± 4

A farmer sells 6.5 kilograms of pears and apples at the farmer's market. 3/4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmers market?

Answers

Answer:

1.625 kilograms

Step-by-step explanation:

Since total weight of pears and apples is 6.5 kilograms and 3/4 of this weight is pears, the weight of the pears is

→ 6.5 x 3/4 = 4.875 kilograms

Since the weight of the pears is 4.875, we can subtract it from the total weight to find the weight of the apples

→ 6.5 - 4.875 = 1.625 kilograms

Answer:

1.625 kg

Step-by-step explanation:

Total weight sold by the farmer =6.5 kilograms

If 3/4 of the weight is pears:

Weight proportion of apple[tex]=1-\frac{3}{4}= \frac{1}{4}[/tex]

Therefore:

Weight of Apples sold at the market [tex]= \frac{1}{4} X 6.5 kg\\[/tex]

=1.625 kg

The farmer sold 1.625 kilograms of apple.

The two-way table shows the distribution of book style to genre. Miguel claims that given that the book is paperback (PB) does not affect the outcome that the book is nonfiction (NF).

Answers

Answer:

Yes, the two events are independent because P(NF|PB)=P(NF).

Step-by-step explanation:

QUICK HELP PLS! Q15: A large city has 6 libraries. ​ ​Each library has at least 1 computer. The median number of computers is 12. The difference between the maximum number of computers and the minimum number of computers is 35. ​ ​Which statement are true about the number of computers in these libraries? ​Select each correct answer. A There must be 3 libraries with 12 computers. B A library could have less than 12 computers. C A library could have more than 50 computers. D All libraries must have less than 35 computers. E At least 1 library does bot have 12 computers.

Answers

Answer:

B A library could have less than 12 computers.

D All libraries must have less than 35 computers.

E At least 1 library does bot have 12 computers.

Which statements are true?

Select each correct answer.


All squares are rhombuses.


All parallelograms are quadrilaterals.


All rectangles are squares.


All rhombuses are rectangles.

Answers

Answer:

the true statement is

All parallelograms are quadrilaterals

Step-by-step explanation:

The answer is that ''All squares are rhombuses'' and ''All parallelograms are quadrilaterals.'' It can't be ''All rectangles are squares.'', because it is not valid. But if it were the other way around it would be correct. It can't be "All rhombuses are rectangles." because it's not valid. Only some can be rectangles.

                                          P.S. Hope this helps!

i need help with this the question is: Josh has 27 signed baseballs. He places the baseballs equally on 3 shelves. How many baseballs are on the shelf. Thanks are helping

Answers

Answer:

If Josh had 27 baseballs and has 3 shelves, then if he splits the 27 between 3 he will get 9.

Step-by-step explanation:

27 ÷ 3 = 9

Hope this helps.

Can someone please help with this question

Answers

Answer:

Option B.

Step-by-step explanation:

The given equation of trend line is

[tex]y=\dfrac{4}{5}x[/tex]

where, x is time in minutes and y is amount of water in gallons.

It is given that the rate (gallons per minute) continues approximately.

We need to find the amount of water flow from the hose in 45 minutes.

Substitute x=45 in the given equation.

[tex]y=\dfrac{4}{5}(45)[/tex]

[tex]y=4\times 9[/tex]

[tex]y=36[/tex]

It means 36 gallons of water from hose in 45 minutes.

Therefore, the correct option is B.

what is the answer to the following question.
7/2 times 5 times 7/5

Answers

Answer:

24 1/2

Step-by-step explanation:

First multiply 7/2 by 5.

7/2 x 5 = 35/2

Then, multiply 35/2 by 7/5.

35/2 x 7/5 = 245/10

Simplify 245/10.

245/10 = 49/2

Convert to mixed fraction.

49/2 = 24 1/2

Therefore, the simplest form of 7/2 x 5 x 7/5 is 24 and 1/2.

Answer:

[tex]24.5[/tex]

hope this helps

brainliest appreciated

good luck!! have a nice day!

Given the formula D=qh, solve for q.

Answers

Answer:

D/ h =q

Step-by-step explanation:

D = qh

Divide each side by h to isolate q

D/ h = dh/h

D/ h =q

Step-by-step explanation: To solve for q in the equation d = qh, all we have to do is get q by itself on the right side of the equation.

Since q is being multiplied by h, to get q by itself,

we simply divide both sides of the equation by h.

On the right, the h's cancel and we are re left with q.

On the left we have [tex]\frac{d}{h}[/tex].

So our answer is [tex]\frac{d}{h} = q[/tex].

Together there are 754 students and teachers in the meeting if the ratio of students to teachers is 27:2 how many teachers are there

Answers

Answer:

52 teachers

Step-by-step explanation:

27x+2x=754

29x=754

x=26

2(26)=52

The number of teachers are 52.

What is a word problem?

A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

For the given situation,

Total number of people = 754

The ratio of students to teachers = 27:2

Let x be the number of people

then,

⇒ [tex]27x+2x=274[/tex]

⇒ [tex]29x=274[/tex]

⇒ [tex]x=\frac{274}{29}[/tex]

⇒ [tex]x=26[/tex]

Thus number of students = [tex]27x[/tex]

⇒ [tex]27(26)=702[/tex]

and number of teachers = [tex]2x[/tex]

⇒ [tex]2(26)=52[/tex]

Hence we can conclude that the number of teachers are 52.

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