Geometry. NEED HELP

Question

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860

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the Circumference of circle P in which A=36 in^2

Guest · Answer 1 · 2017-03-23T07:22:51

A=pi radius squared

C=pi diamerer

D= radius times 2

CPhill · Answer 2 · 2017-03-23T07:27:51

We need to find the radius......the area is given by

36 = pi (radius)^2 divide both sides by

36 / pi = (radius)^2 take the square root of both sides

sqrt (36 / pi) = radius = 6 / sqrt(pi)

And the circumference is given by :

2 * pi * radius

2 * pi * 6/ sqrt (pi) =

12sqrt(pi) ≈ 21.27 in