Homework Help: Math Please Help

Posted by Barb on Sunday, January 13, 2013 at 5:28am.

A pizza box top with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides. If the area of the base is to 144 in^2, what piece of cardboard should be used.

Please explain the process, thanks in advance.

Math Please Help - Reiny, Sunday, January 13, 2013 at 8:53am
the base must be x-2 by x-2

(x-2)^2 = 144
x-2 = ą√144 = ą12 , but obviously x must be positive
x-2=12
so the base should be 14 by 14

make a sketch to verify.

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