Circle Worksheet

1 a.

r = 9.3 mm

Calculate the diameter of the circle.



2 a.

d = 8.1 mm

Calculate the area of the circle.



3 a.

r = 7.9 cm

Calculate the circumference of the circle.



Answer Key

Answers are rounded to 2 decimals.

1 a.  18.6 mm
2 a.  51.5 mm2
3 a.  49.61 cm

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