SOLUTION: the area of a triangle is 40. the length of the height is four-fifths its base. what is the base and height?

Algebra ->  Triangles -> SOLUTION: the area of a triangle is 40. the length of the height is four-fifths its base. what is the base and height?      Log On


   

Question 705995: the area of a triangle is 40. the length of the height is four-fifths its base. what is the base and height?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
x*0.8x/2=40
0.8x^2/2=40
0.8x^2=80
x^2=80/0.8
x^2=100
x=10
0.8x=8