Circle Worksheet

1 a.

C = 4.8 in

Calculate the diameter of the circle.

 

 

1 b.

C = 1.3 mm

Calculate the radius of the circle.

 

 

2 a. The circumference of a circle is 6.2 cm. Calculate its radius.

 

 

2 b.

A = 2.2 mm2

Calculate the circumference of the circle.

 

 

3 a.

A = 5 cm2

Calculate the diameter of the circle.

 

 

3 b.

||
d = 4.5 ft

Calculate the radius of the circle.

 

 

4 a.

r = 2.3 mm

Calculate the diameter of the circle.

 

 

4 b.

||
d = 3.2 mm

Calculate the radius of the circle.

 

 

5 a.

A = 1.3 cm2

Calculate the diameter of the circle.

 

 

5 b.

C = 6.4 in

Calculate the radius of the circle.

 

 

6 a. The area of a circle is 2.3 m2. Calculate its circumference.

 

 

6 b. The radius of a circle is 1.1 yd. Calculate its diameter.

 

 

7 a. The area of a circle is 1.2 mm2. Calculate its circumference.

 

 

7 b. The radius of a circle is 4.1 yd. Calculate its circumference.

 

 

8 a. The diameter of a circle is 8.1 m. Calculate its circumference.

 

 

8 b.

r = 1.7 ft

Calculate the area of the circle.

 

 

9 a.

C = 5.6 cm

Calculate the area of the circle.

 

 

9 b.

A = 5.6 ft2

Calculate the diameter of the circle.

 

 

10 a.

r = 6.9 m

Calculate the circumference of the circle.

 

 

10 b. The circumference of a circle is 8.4 m. Calculate its diameter.

 

 

Page 2

Answer Key

Answers are rounded to 2 decimals.

1 a.  1.53 in
1 b.  0.21 mm
2 a.  0.99 cm
2 b.  5.26 mm
3 a.  2.52 cm
3 b.  2.25 ft
4 a.  4.6 mm
4 b.  1.6 mm
5 a.  1.29 cm
5 b.  1.02 in
6 a.  5.37 m
6 b.  2.2 yd
7 a.  3.88 mm
7 b.  25.75 yd
8 a.  25.43 m
8 b.  9.07 ft2
9 a.  2.5 cm2
9 b.  2.67 ft
10 a.  43.33 m
10 b.  2.68 m


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