Area given the diameter
Area given
the radius
Circumference given the radius
Circumference given the diameter
Find the radius or the diameter when given the circumference
100

What is the area of a circle with a diameter of 12 km?

113 km2

100

What is the area of a circle with a radius of 4 cm?

50.2 cm2

100

What is the circumference of a circle with a radius of 21 m?

131.9 m

100

What is the circumference of a circle with a diameter of 4 ft?

12.6 ft

100

Find the diameter if the circumference is 25.12 cm.

8 cm

200

What is the area of a circle with a diameter of 4 m?

12.6 m2

200

What is the area of a circle with a radius of 11 yd?

379.9 yd2

200

What is the circumference of a circle with a radius of 13 in?

81.6 in

200

What is the circumference of a circle with a diameter of 30 cm?

94.2 cm

200

Find the diameter if the circumference is 40.8 in.

13 in

300

What is the area of a circle with a diameter of 4.8 ft?

18.1 ft2

300

What is the area of a circle with a radius of 3.2 dm?

32.2 dm2

300

What is the circumference of a circle with a radius of 46 yd?

288.9 yd

300

What is the circumference of a circle with a diameter of 18.0 mm?

56.5 mm

300

Find the diameter if the circumference is 87.92 m.

28 m

400

What is the area of a circle with a diameter of 5 miles?

19.6 mi2

400

What is the area of a circle with a radius of 8.1 ft?

206 ft2

400

What is the circumference of a circle with a radius of 9.13 mm?

57.3 mm

400

What is the circumference of a circle with a diameter of 14.6 in?

45.8 in

400

Find the radius if the circumference is 43.96 mm.

7 mm

500

What is the area of a circle with a diameter of 10.5 mm?

86.5 mm2

500

What is the area of a circle with a radius of 10.1 in?

320.3 in2

500

What is the circumference of a circle with a radius of 14.16 km?

88.9 km

500

What is the circumference of a circle with a diameter of 1.94 ft?

6.1 ft

500

Find the radius if the circumference is 131.9 yd.

21 yd

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