# A point P moves around a circle of r = 1ft at 20rpm (rotations per minute). Find the linear velocity (to the nearest feet per minute)?

Apr 18, 2018

$126$ feet per minute

#### Explanation:

.

The perimeter of the circle is:

$P = 2 \pi r = 2 \pi \left(1\right) = 2 \pi$ feet

The point moves around the circle at $20$ rpm. i.e.:

$2 \pi \left(20\right) = 40 \pi = 126$ feet per minute