Question

The area of a trapezoid is given by the formula A=h/2(a+b) .

Solve the formula for b.

Answer 1

(2A)/h -a =b

Explanation:

A= [h(a+b)]/2 I rewrote the formula, because h and a+b are in the numerator.

2A=h(a+b) Multiply both sides of equation by 2

(2A)/h= a+b Divide both side by h

(2A)/h -a= b Subtract a from both sides