AMC 8 1988 Problem 13
AMC8 1988 年第 13 题
圆★★★☆☆
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?
如果玫瑰花丛间距约 1 英尺，环绕一个半径为 12 英尺的圆形露台大约需要多少花丛？
- A.12
- B.38
- C.48
- D.75
- E.450
正确答案 · Correct Answer
D
解析 · Solution
Solution 1
The circumference of the patio is . Since the bushes are spaced about 1 foot apart, about 75 are needed.
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