Solve the problem. Use 3.14 for $\pi$.
-A figure skater must trace a figure eight on the ice that consists of two perfect circles, each with a radius of $11 \mathrm{ft}$. How far does the skater go one time around the figure eight?
A) $69.08 \mathrm{ft}$
B) $138.16 \mathrm{ft}$
C) $32.54 \mathrm{ft}$
D) $34.54 \mathrm{ft}$

Question

Quizplus · Accepted Answer

The distance around one circle is the circumference, which is $2\pi r$. For one circle with a radius of $11 \mathrm{ft}$, the circumference is $2 \times 3.14 \times 11 = 69.08 \mathrm{ft}$. Since the figure eight consists of two circles, the total distance is $2 \times 69.08 = 138.16 \mathrm{ft}$.

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