CPM Homework Help : GC Problem 7-15

The area of the trapezoid at right is $56\; \text{un}^2$ . What is $h$ ? Show all work.

Hint:

What is the formula for the area of a trapezoid?
Use that to solve for $h$ .

Answer:

$\text{Height}=7$ cm

A trapezoid with horizontal bases labeled 6 and 10. A right triangle is created by a line segment h , drawn from the lower left vertex, to the upper base, at right angles.