Area of a circle from the radius
Area = π × radius × radius, with π = 3.14. Halve a diametre to get the radius.
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A circle has a radius of 52 cm. Find its area. Use π = 3.14.
Answer: 8490.56
A circle has a radius of 57 cm. Find its area. Use π = 3.14.
Answer: 10201.86
A circle has a radius of 44 cm. Find its area. Use π = 3.14.
Answer: 6079.04
Tip: Area = π × radius × radius, with π = 3.14. Halve a diametre to get the radius.
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