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The area of a circle is described by the equations:

A=πr2

and the perimeter of a circle is described by the equation:

C=πd

where:

A is the Area

C is the circumference, or perimeter

r is the radius

d=diameter=2r

π= pi, the ratio of diameter to circumference (3.14159)

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14y ago

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Q: How do you find area and perimeter of a circle?
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