Question 39676
The area of  trapezoid is given by
A = (1/2)h(B + b)
To solve for the smaller base,b, we need to isolate it...
First multiply both sides by two, then divide by h, then subtract B, and we get
A = (1/2)h(B + b)
2A = h(B + b)
2A/h = B + b
b = (2A/h) - B