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Worksheets

Circumference

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.
If my radius is 10ft, what is my diameter?
a)
20ft
b)
5ft
c)
31.4ft
d)
62.8ft
2.
If my diameter is 19 inches, what is my radius?
a)
38 inches
b)
9.5 inches
c)
59.66 inches
d)
119.32 inches
3.
If my radius is 2 yd what is the circumference?
a)
4 yd
b)
1 yd
c)
12.56 yd
d)
6.28 yd
4.
If my diameter is 90cm, what is my circumference?
a)
282.6cm
b)
180 cm
c)
90cm
d)
565.2cm
5.

What is the formula for finding the circumference of a circle?

a)

C = r2

b)

C = rd

c)

A = π·r2

d)

C = π·d

6.

What does C represent in the formula:

C = π·d

a)

Pi

b)

Circumference

c)

Diameter

d)

Area

7.

What does d represent in the formula:

C = π·d

a)

diameter

b)

radius

c)

pi

d)

3.14

8.

What is the diameter of a circle?

a)

the distance around a circle

b)

the area of a circle

c)

halfway through a circle

d)

a line through the center of a circle

9.

What is the circumference of a circle?

a)

the distance around a circle

b)

the area of a circle

c)

halfway through a circle

d)

a line through the center of a circle

10.

What number represents π?

a)

31.4

b)

4.13

c)

3.14

d)

34.1