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

football.girl.40  Mar 23, 2017
 #3
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0

A=pi radius squared

C=pi diamerer

D= radius times 2

Guest Mar 23, 2017
 #4
avatar+86919 
+2

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

 

 

 

cool cool cool

CPhill  Mar 23, 2017

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