Circle Worksheet

1 a.

A = 6.5 yd2

Calculate the circumference of the circle.

 

 
1 b. The area of a circle is 1.4 mm2. Calculate its circumference.

 

 
2 a. The area of a circle is 7.3 yd2. Calculate its radius.

 

 
2 b.

C = 8.4 mm

Calculate the diameter of the circle.

 

 
3 a. The circumference of a circle is 5.2 ft. Calculate its diameter.

 

 
3 b.

C = 6 m

Calculate the diameter of the circle.

 

 
4 a. The radius of a circle is 1.6 ft. Calculate its circumference.

 

 
4 b.

A = 2.7 in2

Calculate the radius of the circle.

 

 
5 a. The radius of a circle is 2.3 in. Calculate its diameter.

 

 
5 b. The radius of a circle is 1.5 mm. Calculate its circumference.

 

 
6 a.

A = 5.3 cm2

Calculate the radius of the circle.

 

 
6 b. The diameter of a circle is 7 in. Calculate its radius.

 

 
7 a. The radius of a circle is 1.4 mm. Calculate its circumference.

 

 
7 b.

r = 5.3 m

Calculate the circumference of the circle.

 

 
8 a.

d = 5.1 mm

Calculate the area of the circle.

 

 
8 b.

||
d = 6.9 ft

Calculate the radius of the circle.

 

 
9 a. The diameter of a circle is 4.5 mm. Calculate its circumference.

 

 
9 b. The diameter of a circle is 8.8 ft. Calculate its area.

 

 
10 a. The circumference of a circle is 3.3 mm. Calculate its area.

 

 
10 b. The area of a circle is 1.2 in2. Calculate its diameter.

 

 
Page 2

Answer Key

Answers are rounded to 2 decimals.

1 a.  9.04 yd
1 b.  4.19 mm
2 a.  1.52 yd
2 b.  2.68 mm
3 a.  1.66 ft
3 b.  1.91 m
4 a.  10.05 ft
4 b.  0.93 in
5 a.  4.6 in
5 b.  9.42 mm
6 a.  1.3 cm
6 b.  3.5 in
7 a.  8.79 mm
7 b.  33.28 m
8 a.  20.42 mm2
8 b.  3.45 ft
9 a.  14.13 mm
9 b.  60.79 ft2
10 a.  0.87 mm2
10 b.  1.24 in

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