As shown in the figure above, a thin conveyor belt $15$ feet long is drawn tightly around two circular wheels each

As shown in the figure above, a thin conveyor belt $15$ feet long is drawn tightly around two circular wheels each $1$ foot in diameter. What is the distance, in feet, between the centers of the two wheels?

A. $\dfrac{15-\pi}2$

B. $\dfrac{5\pi}4$

C. $15-2\pi$

D. $15-\pi$

E. $2\pi$

Answer: A

Source: GMAT Prep

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