SOLUTION: The surface area of a box is 232 square inches. The box is 4 inches wide and 8 inches long. What is an equation to find the height?

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Question 582654: The surface area of a box is 232 square inches. The box is 4 inches wide and 8 inches long. What is an equation to find the height?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Surface area of box = 2(lw+wh+lh) where l ,w,h are the length ,width & height respectively.
232= 2(lw+wh+lh)
232/2 = lw+wh+lh
116 = lw+wh+lh
116-lw= wh+lh
116-lw= h(l+w)
(116-lw)/(l+w)= h
Plug the values of length & width to get the height.
The answer is 7 inches