Question
The ratio of weights of two spheres of different
materials is 8:17 and the ratio of the weights per same of materials of each is 289:64. The ratio of radius of the two spheres is.Solution
Density = mass / volume Ratio of the volumes of spheres = (8/289)/ (17/64) = (8×64)/17×289 4/3 πr13 /4/3 πr23 = 512/17×289 r1: r2 =8:17
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