Circle Worksheet

1 a.

A = 4.3 ft2

Calculate the radius of the circle.

 

 

1 b. The diameter of a circle is 6.1 in. Calculate its circumference.

 

 

2 a. The area of a circle is 5.1 yd2. Calculate its circumference.

 

 

2 b. The diameter of a circle is 9.6 in. Calculate its circumference.

 

 

3 a. The diameter of a circle is 3 cm. Calculate its area.

 

 

3 b.

||
r = 6.6 in

Calculate the circumference of the circle.

 

 

4 a.

C = 2.7 yd

Calculate the diameter of the circle.

 

 

4 b.

d = 6.3 m

Calculate the area of the circle.

 

 

5 a.

d = 8.9 m

Calculate the radius of the circle.

 

 

5 b. The circumference of a circle is 9.2 ft. Calculate its area.

 

 

6 a. The diameter of a circle is 2 mm. Calculate its radius.

 

 

6 b.

r = 1.9 mm

Calculate the circumference of the circle.

 

 

7 a.

A = 9 cm2

Calculate the radius of the circle.

 

 

7 b.

C = 7.2 m

Calculate the diameter of the circle.

 

 

8 a. The radius of a circle is 6.9 cm. Calculate its circumference.

 

 

8 b.

d = 1.2 mm

Calculate the circumference of the circle.

 

 

9 a.

r = 3.8 mm

Calculate the circumference of the circle.

 

 

9 b. The radius of a circle is 2.7 yd. Calculate its diameter.

 

 

10 a. The radius of a circle is 6.7 mm. Calculate its area.

 

 

10 b. The area of a circle is 8.9 in2. Calculate its circumference.

 

 

Page 2

Answer Key

Answers are rounded to 2 decimals.

1 a.  0.12 ft
1 b.  1915.4 in
2 a.  80.03 yd
2 b.  3014.4 in
3 a.  706.5 cm2
3 b.  4144.8 in
4 a.  0.01 yd
4 b.  3115.67 m2
5 a.  4.45 m
5 b.  0.07 ft2
6 a.  1 mm
6 b.  1193.2 mm
7 a.  0.17 cm
7 b.  0.02 m
8 a.  4333.2 cm
8 b.  376.8 mm
9 a.  2386.4 mm
9 b.  5.4 yd
10 a.  14095.46 mm2
10 b.  105.73 in


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