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1988 AJHSME Problems/Problem 13

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Problem

If rose bushes are spaced about 1 foot apart, approximately how many bushes are needed to surround a circular patio whose radius is 12 feet?

\text{(A)}\ 12 \qquad \text{(B)}\ 38 \qquad \text{(C)}\ 48 \qquad \text{(D)}\ 75 \qquad \text{(E)}\ 450

Solution

The circumference of the patio is 2\cdot 12\cdot \pi =24\pi \approx 75.398. Since the bushes are spaced 1 foot apart, about 75\rightarrow \boxed{\text{D}} are needed.

See Also

1988 AJHSME (ProblemsResources)
Preceded by
Problem 12
Followed by
Problem 14
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