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Surface area for a circle can be calculated using the following formula: A = π * r^2


Where:

A = surface area

r = radius

π = the constant pi (which is approximately 3.14)


For example, if the radius of a circle is 5cm, then you would simply input this value into the formula:


A = π * r^2

A = π * 5^2

A = 25 π

A = 25*3.14 = 78.5 cm^2

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8y ago
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9y ago

pi*r^2 where r is the radius.

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Q: Surface area of a circle
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