C) A certain number of metallic cones, each of radius 2 cm and height 3 cm are melted and recast
into a solid sphere of radius 6 cm. Find the number of cones
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Answer:
r=2,h=3
volume of n(cone)=volume of spare
22÷7×1÷3×4×3×n=4÷3×22÷7×216
n=648
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