SOLUTION: The height of a triangle is 6 inches greater than the length of the base . If the area of the triangle is 20 square inches, what is the length of the base?

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Question 588772: The height of a triangle is 6 inches greater than the length of the base . If the area of the triangle is 20 square inches, what is the length of the base?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a=1/2*b*h
20=1/2*b*(b+6)
40=b*(b+6)
b^2+6b-40=0
(b-4)*(b+10)=0
b=4
h=10