3.141592653589793 * 200 = 628.31853
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The circumference is 200 times 3.14159 = 628.32 The circumference C is pi times diameter d. pi = 3.14159
Area = pi times radius2 where radius = 200 feet therefore area = pi times 2002 Area = 125 663.7 feet2
the same as pi squared, which is 9.86960440109
Perimeter = pi*diameter so 200*pi = 628.32 metres.
The square root of pi times pi is simply pi. Because pi*pi=pi squared, the squared and the square root will cancel each other, leaving just pi.