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If S_(1), denotes the surface area of a sphere with radius r and S_(2), denotes the total surface area of a cylinder with radius r and height 2r, then ......... holds good.a. S_(1)=S_(2)b. S_(1)gt S_(2)c. S_(1) lt S_(2)d.S_(1)=2S_(2) |
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Answer» `S_(1)=S_(2)` |
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