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Let w=width then the length is w+15 and the area w(w+15)=9064 sq ft.

So w²+15w-9064=0. It happens that two factors of 9064 are 88 and 103, which differ by 15, so we can factorise the quadratic:

(w+103)(w-88)=0. So w=88 and w+15=103.

So the dimensions are 88' by 103'.

by Top Rated User (720k points)

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