Calculate the surface area of a sphere whose volume is 4851 cm 3 ?
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volume of sphere= 4/3*pi*r^3---(1)
given volume=4851 cm^3---(2)
(1)=(2)
4/3*22/7*r^3=4851
r^3=(4851*3*7)/(4*22)
after cancellation
r^3=(21/2)^3
r=21/2cm
surface area of sphere=4*pi*r^2
=4*22/7*21/2*21/2
=22*21*3
=1386square cm
given volume=4851 cm^3---(2)
(1)=(2)
4/3*22/7*r^3=4851
r^3=(4851*3*7)/(4*22)
after cancellation
r^3=(21/2)^3
r=21/2cm
surface area of sphere=4*pi*r^2
=4*22/7*21/2*21/2
=22*21*3
=1386square cm
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