# Circle Worksheet

 1 a. d = 9.5 mCalculate the circumference of the circle.
 1 b. A = 6.8 m2Calculate the radius of the circle.
 2 a. The area of a circle is 9.9 m2. Calculate its diameter.
 2 b. The diameter of a circle is 7.4 ft. Calculate its area.
 3 a. r = 6.9 ydCalculate the area of the circle.
 3 b. The diameter of a circle is 7.5 in. Calculate its radius.
 4 a. | | d = 2.2 mmCalculate the radius of the circle.
 4 b. d = 7.8 inCalculate the circumference of the circle.
 5 a. The radius of a circle is 6.3 mm. Calculate its diameter.
 5 b. A = 4.6 ft2Calculate the circumference of the circle.
 6 a. C = 2.5 mmCalculate the radius of the circle.
 6 b. The diameter of a circle is 2.3 in. Calculate its circumference.
 7 a. The circumference of a circle is 3.6 mm. Calculate its radius.
 7 b. | | d = 6.9 ydCalculate the radius of the circle.
 8 a. The circumference of a circle is 1.3 mm. Calculate its diameter.
 8 b. The radius of a circle is 9.3 ft. Calculate its diameter.
 9 a. The radius of a circle is 6.5 mm. Calculate its diameter.
 9 b. C = 7.3 mCalculate the area of the circle.
 10 a. d = 5.9 mCalculate the radius of the circle.
 10 b. The circumference of a circle is 3.7 m. Calculate its area.
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# Answer Key

Answers are rounded to 2 decimals.

 1 a. 29.83 m
 1 b. 1.47 m
 2 a. 3.55 m
 2 b. 42.99 ft2
 3 a. 149.5 yd2
 3 b. 3.75 in
 4 a. 1.1 mm
 4 b. 24.49 in
 5 a. 12.6 mm
 5 b. 7.6 ft
 6 a. 0.4 mm
 6 b. 7.22 in
 7 a. 0.57 mm
 7 b. 3.45 yd
 8 a. 0.41 mm
 8 b. 18.6 ft
 9 a. 13 mm
 9 b. 4.24 m2
 10 a. 2.95 m
 10 b. 1.09 m2

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