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Question

 The volume of a sphere of radius r is  obtained by multiplying its surface area by :


Options:
A .  `4/3`
B .  `r/3`
C .  `(4r)/(3)`
D .  3 r
Answer: Option B

Volume  = `4/3 pi r^3 = r/3 (4pi r^2)  = r/3` x surface area .



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