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The surface area of a solid metallic sph...

The surface area of a solid metallic sphere is `2464 cm^(2).` It is melted and recast into solid right circular cones of radius 3.5 cm and height 7 cm. Calculate :
the number of cones recast. (Take `pi = (22)/(7))`

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The correct Answer is:
128
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ICSE-MATHEMATICS -2014-SECTION- B
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