Circumference Assignment

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Which statements are true about the components of a circle? Check all that apply.

1 3 4

Use the circle to answer the questions. Circumference The diameter is cm. The circumference in terms of es002-1.jpg is es002-2.jpgcm. Using 3.14 for es003-1.jpg, the approximate circumference of the circle is cm.

3 3 4

Choose which statements are true about mr001-1.jpg. Check all that apply.

3 4 5

Circumference The radius is cm. The circumference in terms of π is π cm. Using 3.14 for π, the approximate circumference of the circle is

7/4 7/2 11.0

The circumference of a circle is 16es001-1.jpg ft. The radius is

8

Length Kevin needs to run 320 meters a day for his training program. He plans on running around the high school track shown. If he runs around the track once, will he meet his daily goal?

A

A bicycle wheel has a circumference of 62 inches. Find the diameter of the wheel. If necessary, round to the tenths place.

B

A circular swimming pool has a radius of 20 feet. A fence is going to be built so that there is a 4-foot space around the entire pool. What is the length of the fence? Sunitha solved the problem as shown. Student Work What was her error?

B

The spray from a sprinkler reaches 21 feet from the sprinkler and creates a circle as it spins. What is the circumference of the circle sprayed by the sprinkler? Use 22 7 for π.

D

Describe what es002-1.jpg is and explain how it is used in finding the circumference of a circle.

Pi is a number that is approximated by 3.14, or 22/7. It is the ratio of the circumference to the diameter of any circle. This ratio can be rearranged to find circumference of a circle by multiplying pi times diameter.


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