Answers

2016-03-11T18:17:32+05:30
Yaa this question was also there in our sa2 exam
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2016-03-11T19:40:23+05:30
Pie r^3/pie R^3=64/343
=r^3/R^3=64/343
Cube root both sides
r/R=4/7
Squaring both sides
r^2/R^2=16/49
Multiplying and dividing 4 both sides
4r^2/4R^2=4*16/4*49=64/196
Hence the ratio of their surface areas is 64:196
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