The base of a shipping drum is in the shape of a circle with a diameter of 22 inches. Which of the following is closest to the circumference of the base of the shipping drum? (Use 3.14 for .)
The circumference of a circle can be found using the formula $C = \pi d$, where $C$ is the circumference and $d$ is the diameter. Substituting $22$ for the diameter, we have $C = \pi(22) \approx \boxed{69}$.
