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OpenStudy (anonymous):
James has two porcelain spheres. The radii of the spheres are in a ratio of 2 : 5. What is the ratio between the volumes of the two spheres? 16 : 125 8 : 125 8 : 25 16 : 25
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jimthompson5910 (jim_thompson5910):
If the ratio of the two radii is 2:5, then you cube each piece to get 2^3 = 8 and 5^3 = 125 So the ratio of the two volumes is 8:125
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