Chapter A.2, Problem 45AYU

To determine

To find: How many feet has a wheel with a diameter of 16 inches traveled after four revolutions?

Answer to Problem 45AYU

$16.8$ ft

Explanation of Solution

Circumference of the circle $C=\pi d=\pi \times 16=16\pi \text{in}=\frac{16}{12}\pi \text{ft}=\frac{4}{3}\pi \text{ft}$.

1 revolution $=$ circumference of the wheel.

4 revolution $=4\times$ circumference of the wheel $=4\times \frac{4}{3}\pi =16.8$ ft.