The volumes of two spheres are in the ratio 64:27.The ratio of their surface area is
Volume of 1st sphere=4/3()
Volume of 2nd sphere=4/3()
Ratio=(4/3∏r1³)/(4/3∏r2³)=64/27 r1/r2=4/3
Ratio of surface area=4∏r1²/4∏r2²=16:9
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