pi*radius2 is the formula for finding the area of a circle.
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a = pi r sq. a = pi 14 sq. or pi 196 a= pi X 196 if you leave in terms of pi
two times the radius times pi
Area=pi times radius squared Circumference=pi times diameter or pi times radius times two
(radius+radius) times pi
Well, you find the area of a circle by multiplying (pi times radius2) or (pi times radius times radius). The radius is half of the diameter. The formula for the circumference is (pi times diameter). Multiply the radius times 2 to get the diameter. Multiply the diameter times pi.