题库搜索>问题求解PS-13672
On an aerial photograph, the surface of a pond appears as circular region of radius 7/16 inch. If a distance of 1 inch on the photograph corresponds to an actual distance of 2 miles, which of the following is the closest estimate of the actual surface area of the pond, in square miles?
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因为1inch=2mile, 所以7/16inch x 2 =7/8 mile.
据题意7/8是圆的半径，求面积。pai乘以7/8的平方=0.76pai=2.38。
答案中最接近的是2.4
337024ygjon
忘记乘以pai了，真的是太蠢了，
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2021-08-30 11:19:18
今天要加油鸭
没读懂题系列....If a distance of 1 inch on the photograph corresponds to an actual distance of 2 miles, 这句话说了个比例尺
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2019-01-23 18:18:46
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