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Worksheets

Relating Area and Circumference

Total questions: 10

Worksheet time: 35mins

Name
Class
Date
1.
What is the formula for area of a circle?
a)
C=πd
b)
C=πd²
c)
A=πr²
d)
A= C/d
2.

What is the area of the circle in terms of pi?

a)

5π cm²

b)

25π cm²

c)

10π cm²

d)

15.7π cm²

3.
What is the circumference of a circle with a radius of 5 in terms of π ?
a)
5 π square units
b)
10 π square units
c)
25 π square units
d)
50 π square units
4.

Find the area of the circle with a radius of 11, leave your answer in terms of π.

a)

121π cm2

b)

22π cm2

c)

484π cm2

d)

121π m2

5.

Find the Circumference for a Circle with a radius of 9. Leave your answer in terms of pi.

a)

4.5π

b)

81π

c)

12π

d)

18π

6.

Find Circumference. Leave answer in terms of pi (π).

a)

36π

b)

9π

c)

4.5π

d)

18π

7.

Find the area of the circle in terms of π

a)

4π m24\pi\ m^2

b)

16π m216\pi\ m^2

c)

2π m22\pi\ m^2

d)

8π m28\pi\ m^2

8.

A cruise ship has a large, circular window. It has a circumference of 18.84 meters. What is the window's area?

a)

31.25 m2

b)

29.55 m2

c)

30.36 m2

d)

28.26 m2

9.

Ms. Catall is using a compass to find her way out of the woods. The compass has a circumference of 25.12 centimeters. What is the compass's area?

a)

49.2 cm2

b)

45.6 cm2

c)

50.24 cm2

d)

55.9 cm2

10.

The largest cookie ever baked measured a circumference of 320.28 feet. Which of these is closest to the area of the cookie?

a)

2601 ft²

b)

8167 ft²

c)

2042 ft²

d)

162 ft²