Circle Worksheet

1 a. The circumference of a circle is 2.9 in. Calculate its area.

 

 
1 b. The diameter of a circle is 3.7 cm. Calculate its circumference.

 

 
2 a.

A = 7.1 ft2

Calculate the radius of the circle.

 

 
2 b. The area of a circle is 9.6 yd2. Calculate its diameter.

 

 
3 a.

||
r = 5.2 m

Calculate the area of the circle.

 

 
3 b.

r = 7.7 m

Calculate the diameter of the circle.

 

 
4 a.

C = 8.6 ft

Calculate the diameter of the circle.

 

 
4 b.

||
r = 5.9 yd

Calculate the diameter of the circle.

 

 
5 a.

A = 7.6 ft2

Calculate the diameter of the circle.

 

 
5 b. The radius of a circle is 7.1 cm. Calculate its diameter.

 

 
6 a.

A = 3.8 mm2

Calculate the diameter of the circle.

 

 
6 b. The diameter of a circle is 8.2 in. Calculate its area.

 

 
7 a.

A = 3.4 yd2

Calculate the radius of the circle.

 

 
7 b. The radius of a circle is 8.1 ft. Calculate its area.

 

 
8 a. The radius of a circle is 2 mm. Calculate its circumference.

 

 
8 b.

A = 4.5 cm2

Calculate the diameter of the circle.

 

 
9 a.

C = 1.4 m

Calculate the diameter of the circle.

 

 
9 b. The circumference of a circle is 7.6 yd. Calculate its area.

 

 
10 a.

C = 7.6 mm

Calculate the area of the circle.

 

 
10 b.

d = 7.4 in

Calculate the circumference of the circle.

 

 
Page 2

Answer Key

Answers are rounded to 2 decimals.

1 a.  0.67 in2
1 b.  11.62 cm
2 a.  1.5 ft
2 b.  3.5 yd
3 a.  84.91 m2
3 b.  15.4 m
4 a.  2.74 ft
4 b.  11.8 yd
5 a.  3.11 ft
5 b.  14.2 cm
6 a.  2.2 mm
6 b.  52.78 in2
7 a.  1.04 yd
7 b.  206.02 ft2
8 a.  12.56 mm
8 b.  2.39 cm
9 a.  0.45 m
9 b.  4.6 yd2
10 a.  4.6 mm2
10 b.  23.24 in

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