math
posted by Louis .
a rectangular mural is painted on a wall. if the mural is 12ft wide and covers 86.4sqft,what is the height of the mural?

The formula for finding the area of a rectangle is:
A = 2h + 2w
You know the area and the width. Solve the equation for the height. If you post your answer, we'll be glad to check it. 
The area of a rectangle is (length)(width)
so 86.4 = 12(length)
length = 86.4/12
Check your answer by multiplying what you got by 12 
9,76.8
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