SOLUTION: Bob has enough fertilizer to cover 320ft^2 of garden space. How wide is the largest circular garden that Bob can fertilize. Use 3.14 for Pie

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Question 842936: Bob has enough fertilizer to cover 320ft^2 of garden space. How wide is the largest circular garden that Bob can fertilize. Use 3.14 for Pie
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Wanted is a circle enclosing 320%2Aft%5E2 of AREA. Width of a circle would best be understood as its diameter.

pi%2A%28d%2F2%29%5E2=320 and you can substitute 3.14 for pi whenever you are ready.
%28d%2F2%29=sqrt%28320%2Fpi%29
d=2%2Asqrt%28320%2Fpi%29
d=2%2Asqrt%282%5E5%2A2%2A5%2Fpi%29
highlight%28d=16%2Asqrt%285%2Fpi%29%29------the diameter