Question 1095553
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Volume = 5*(x-10)*(x-10) = 720.   ====>


{{{(x-10)^2}}} = {{{720/5}}} = 144  ====>


x-10 = {{{sqrt(144)}}} = 12  ====>


x = 22 feet.


<U>Answer</U>.  Dimensions of the square metal should be 22 ft x 22 ft.
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