SOLUTION: A mural is to be painted on the wall that is 15m long and 12m high. A border of uniform width is to surround the mural. If the mural is to have an area of 135m^2, how wide must the
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-> SOLUTION: A mural is to be painted on the wall that is 15m long and 12m high. A border of uniform width is to surround the mural. If the mural is to have an area of 135m^2, how wide must the
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Question 1181262: A mural is to be painted on the wall that is 15m long and 12m high. A border of uniform width is to surround the mural. If the mural is to have an area of 135m^2, how wide must the border be to completely cover the wall?
Thanks Answer by ikleyn(52794) (Show Source):
Let w be the uniform width of the border.
Then you have this area equation to find "w"
(15-2w)*(12-2w) = 135 square meters.
Simplify; reduce to the standard quadratic equation and solve using the quadratic formula.
