Circle Worksheet

1 a. The diameter of a circle is 7.6 m. Calculate its radius.

 

 
1 b.

d = 6.1 mm

Calculate the area of the circle.

 

 
2 a. The radius of a circle is 6.3 ft. Calculate its area.

 

 
2 b.

r = 8.4 cm

Calculate the area of the circle.

 

 
3 a.

||
d = 2.3 ft

Calculate the radius of the circle.

 

 
3 b. The circumference of a circle is 5.5 in. Calculate its area.

 

 
4 a.

||
r = 4 mm

Calculate the diameter of the circle.

 

 
4 b. The diameter of a circle is 9.5 ft. Calculate its radius.

 

 
5 a. The radius of a circle is 9.9 cm. Calculate its area.

 

 
5 b. The radius of a circle is 1.2 ft. Calculate its circumference.

 

 
6 a.

||
d = 3 ft

Calculate the area of the circle.

 

 
6 b.

A = 2.1 in2

Calculate the circumference of the circle.

 

 
7 a.

A = 9.1 mm2

Calculate the radius of the circle.

 

 
7 b.

r = 2 ft

Calculate the diameter of the circle.

 

 
8 a. The circumference of a circle is 8.2 m. Calculate its diameter.

 

 
8 b. The circumference of a circle is 3.9 yd. Calculate its area.

 

 
9 a. The radius of a circle is 5.4 m. Calculate its diameter.

 

 
9 b. The circumference of a circle is 9.7 cm. Calculate its radius.

 

 
10 a.

||
d = 7.3 ft

Calculate the radius of the circle.

 

 
10 b. The area of a circle is 3.3 yd2. Calculate its radius.

 

 
Page 2

Answer Key

Answers are rounded to 2 decimals.

1 a.  3.8 m
1 b.  29.21 mm2
2 a.  124.63 ft2
2 b.  221.56 cm2
3 a.  1.15 ft
3 b.  2.41 in2
4 a.  8 mm
4 b.  4.75 ft
5 a.  307.75 cm2
5 b.  7.54 ft
6 a.  7.07 ft2
6 b.  5.14 in
7 a.  1.7 mm
7 b.  4 ft
8 a.  2.61 m
8 b.  1.21 yd2
9 a.  10.8 m
9 b.  1.54 cm
10 a.  3.65 ft
10 b.  1.03 yd

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