Math Please Help
posted by Barb on .
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.
the base must be x-2 by x-2
(x-2)^2 = 144
x-2 = ±√144 = ±12 , but obviously x must be positive
so the base should be 14 by 14
make a sketch to verify.