Name: SAT Math Help & School Math Mastery
Availability: InStock

Loading...

#36429

equations

algebra

hard

60 sec

The formula for the surface area of a right circular cylinder is $A = 2 π r^{2} + 2 π r h$ , where $A$ is the surface area, $r$ is the radius, and $h$ is the height. Which equation correctly expresses the height $h$ in terms of $A$ and $r$ ?

A.

$h = \frac{A - 2 π r ^{2}}{2 π r}$

B.

$h = A - 2 π r^{2} - 2 π r$

C.

$h = \frac{A}{2 π r} - r$

D.

$h = \frac{A}{2 π r ^{2}} - \frac{1}{r}$