The base radius and height of a right circular solid cone are 12cm and 24cm, respectively. It is melted and recast into spheres of diameter 6cm each. Find the number of spheres so formed.
A
48
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B
40
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C
32
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D
24
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Solution
The correct option is C32 Radius of a right circular solid cone =12cm Height of a right circular solid cone =24cm Sphere diameter =6cm Volume of right circular solid cone =V=N× Volume of sphere V=13πr2h=N×43πr3 13×122×24=N×4333 N=32