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【OG20-P164-119题】
For a party, three solid cheese balls with diameters of 2 inches, 4 inches, and 6 inches, respectively, were combined to form a single cheese ball. What was the approximate diameter, in inches, of the new cheese ball? (The volume of a sphere is 43 πr3 , where r is the radius.)
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题目：聚会上准备了三个固体奶酪球，它们的直径分别是2英寸、4英寸和6英寸，现在把这三个奶酪球融合为I个奶酪球，问这种新的奶酪球的直径接近于多少
解：假设新奶酪球的半径为x，由题可知三个奶酪球的半径分别为1英寸、2英寸和3英寸，融合后的体积为4π(1+23+33）/3=4πx3/3，求得x=36开立方根，因此新奶酪球的直径为2（36开立方根）
499685skw
首先题目中给出的就是直径，别忘了除以2.其次提出4/3pi就好，不用去管它
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2022-09-04 14:07:16
373961gg
最后求的diameters!!不是radius
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2020-05-18 12:11:29
( ¨̮ )
diameters直径
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2018-04-14 17:48:46
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