A solid sphere of diameter 16cm is melted and from this small cones of radius 4 cm and height 8cm are formed find the no of cones so formed
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Radius of sphere=8cm
Vol of sphere=4/3pi*r³
=4/3*pi*8*8*8
=2048pi/3
Vol of cone=1/3pi×r²*h
=1/3*pi*4*4*8
=128pi/4
No of cones=Vol of sphere÷Vol of cone
=2048pi/3÷128pi/3
=2048pi/3*3/128pi
=2048/128
=16
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