SOLUTION: the surface area of a rectangular solid of length l, width w, and height h is given by S = 2lh + 2lw + 2wh. solve for l

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Question 153682This question is from textbook elementary and intermediate algebra
: the surface area of a rectangular solid of length l, width w, and height h is given by S = 2lh + 2lw + 2wh. solve for l This question is from textbook elementary and intermediate algebra

Answer by orca(409) About Me  (Show Source):
You can put this solution on YOUR website!
S = 2lh + 2lw + 2wh
S - 2wh = 2lh + 2lw
s - 2wh = 2l(h + w) (factor the right side)
%28S-2wh%29%2F%282%28h%2Bw%29%29=l (divide both sides by 2(h+w))
so
l=%28S-2wh%29%2F%282%28h%2Bw%29%29