Question

For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h.

A=(a+b)2h
Solve for a.
A. a=2A−bh
B. a=2Ah+b
C. a=2Ah−b
D. a=Ah2−b

Answer 1

I hope this helps you


A=(a+b).h/2


2A=(a+b).h


2A/h=a+b


a=2A/h-b


a=2A-b.h/h

Answer 2

I think you mistyped a little, the Area of the trapezoid is (a + b) * h / 2, and then you can find the right solution, which is 2*A / h - b = a, but I cannot see this option either. You may mistyped the solutions as well.