Q20 of 62 Page 138

If volumes of two spheres are in the ratio 64:27, then the ratio of their surface areas is

Let the radius of spheres be r1 and r2 and we know that



Given,


Ratio of volumes is 64 : 27




…(1)


Now,


Surface area of sphere = 4πr2


where r = radius




So, ratio of surfaces areas is 16 : 9

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