John111111 John111111

15-03-2015
Mathematics

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Leo wants to paint a mural that covers a wall with an area of 1440 square feet. the height of the wall is 2/5 of its length what is the length and the height of the wall?

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Since3122015 Since3122015

16-03-2015

[tex]A=lh=1440\\h= \frac{2}{5}l\\1440=l( \frac{2}{5}l)\\1440=\frac{2}{5} l^{2}\\3600=l^{2}\\60=l\\\\h= \frac{2}{5}(60)\\h=24[/tex]

H = 24 feet
L = 60 feet

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