A cone is 8.4cm high and radius of its base is 2.1 cm it is melted and recast into sphere .Find radius of the sphere
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vol. of cone = vol. of sphere
therefore
1/3 *pi*2.1*2.1*8.4=4/3 *pi *radius of sphere (r) raised to3
which implies 2.1*2.1*8.4*3 / 4*3=r^3
therefore r=2.1cm
therefore
1/3 *pi*2.1*2.1*8.4=4/3 *pi *radius of sphere (r) raised to3
which implies 2.1*2.1*8.4*3 / 4*3=r^3
therefore r=2.1cm
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