Question

The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h.

A=(a+b)2h

Solve for a.

Answer 1

A = (a+b)/2 (h)
2A = (a+b) h 
a +b = 2A/h
a = 2A/h - b

answer is D.
a = 2A/h - b

Answer 2

Answer:

a = 2A/h - B

Step-by-step explanation:

Confirming the other answer!