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A metallic sphere of radius 10.5 cm is melted and then recast into small cones, each of radius 3.5 cm and heigh 3cm.The number of such cones(a) 21 (b) 63 (c) 126 (d) 130

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A metallic sphere of radius 10.5 cm is melted and then recast into small cones, each of radius 3.5 cm and heigh 3cm.The number of such cones(a) 21 (b) 63 (c) 126 (d) 130



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