Name: SAT Math Help & School Math Mastery
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#14378

equations

formulas

medium

30 sec

The formula for the area $A$ of a trapezoid is $A = \frac{1}{2} (b_{1} + b_{2}) h$ , where $b_{1}$ and $b_{2}$ are the lengths of the parallel bases and $h$ is the height. Which of the following correctly expresses the height $h$ in terms of $A$ , $b_{1}$ , and $b_{2}$ ?

A.

$h = \frac{A}{2 ( b _{1} + b _{2} )}$

B.

$h = \frac{2 A}{b _{1} + b _{2}}$

C.

$h = 2 A (b_{1} + b_{2})$

D.

$h = \frac{A}{b _{1} + b _{2}} - 2$