what is the number of feet in the other base.

Question

Express B1 in terms of A, h, and B2. The area of a trapezoid is 60 square feet, its height is 6 feet and one base is 12 feet. what is the number of feet in the other base.

Answer 1

The formula for the area of a trapezoid is:

 

A = h·(B₁+B₂)/2

 

Solving for B₁:

 

A = h·(B₁+B₂)/2

2A/h = B₁ + B₂

2A/h - B₂ = B₁

 

B₁ = 2·60/6 - 12

B₁ = _____?