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area=422.7ft squared

Guest Mar 28, 2017
 #1
avatar+87294 
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We need to find the radius, r......so the area =

 

422.7  =   pi * (radius)^2     divide both sides by pi

 

[422.7 / pi]  = r^2          take the positive root of both sides

 

sqrt [ 422.7  / pi  ]   = r

 

 

 

And the circumference = 2 *pi * r  =

 

2 *pi * sqrt [2 422.7  / pi  ]    ≈ 72.88 ft.

 

 

cool cool cool

CPhill  Mar 28, 2017

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