Homework Help: math

Posted by zack on Thursday, October 18, 2012 at 8:45am.

Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of ALL THREE SIDES?

I NEED A ANSWER ASAP! PLEASE

math - Reiny, Thursday, October 18, 2012 at 9:23am
short side --- x
longer side ---- 4x

area = (1/2) base x height

(1/2)(x)(4x) = 18
2x^2 = 18
x^2 = 9
x = √9 = 3

short side = 3, longer side = 12
let the hypotenuse be h
h^2 = 3^2 + 12^2 = 153
h = √153 or appr 12.37

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