SOLUTION: the area of a trapezoid is A=h(a+b)/2, where A is the area, h is the height and a and b are the two parallel sides. a) rearrange the formula to isolate a b) the are of the t

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: the area of a trapezoid is A=h(a+b)/2, where A is the area, h is the height and a and b are the two parallel sides. a) rearrange the formula to isolate a b) the are of the t      Log On

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Question 1157459: the area of a trapezoid is A=h(a+b)/2, where A is the area, h is the height and a and b are the two parallel sides.
a) rearrange the formula to isolate a
b) the are of the trapezoid is 70cm2 , the height is 10 cm and the length of b is 6cm find the length of a

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!

the area of a trapezoid is A=h%2A%28a%2Bb%29%2F2
2A%2Fh+=%28a%2Bb%29
%282A%2Fh%29-b+=+a
%282%2A70%29%2F10+-6=+a
a=8