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Question 150605This question is from textbook
: The altitude of an isosceles trapezoid is 20cm. If the lower base is 10cm longer than the upper base and the area of the trapezoid is 220sq. cm, find the lengths of the bases.This question is from textbook
: The altitude of an isosceles trapezoid is 20cm. If the lower base is 10cm longer than the upper base and the area of the trapezoid is 220sq. cm, find the lengths of the bases.
Answer by elima(1423) About Me  (Show Source):
You can put this solution on YOUR website!
area of trapezoid;
A=(1/2)H(b1+b2)
220=(1/2)20(x+x+10)
220=10(2x+10)
220=20x+100
120=20x
6=x
:)