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December 18, 2014

December 18, 2014

Posted by **Jane** on Saturday, April 21, 2012 at 6:05pm.

Please show me in detail how to set this up and solve.

- math -
**Damon**, Saturday, April 21, 2012 at 7:18pmarea of sides = 2 L *6 + 2 W*6

= 12 L + 12 W

area of bottom = L W

total area = L W + 12 L + 12 W = 480-4*36

so

L W + 12 L + 12 W = 336

but L = W + 4

(W+4)W + 12(W+4) + 12 W - 336 = 0

W^2 + 28 W -288 = 0

(W -16)(W+18) = 0

W = 16

L = 16+4 = 20

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