Find the volume of a sphere whose surface area is 1386 cm^2
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formula of surface area of sphere=4πrsq.
1386cmsq. =4πrsq.
1386=4*22/7rsq.
1386*7/4*22=rsq.
9702/88=rsq.
110.25=rsq.
√110.25=r
10.5cm=r, r=10.5cm.
volume of a sphere =4/3πrcube
=4/3*22/7*10.5*10.5*10.5
=1157.625/21
55.125cmcube.
volume of a sphere = 55.125cmcube ( ans).
it will help.
mark as brain list.
1386cmsq. =4πrsq.
1386=4*22/7rsq.
1386*7/4*22=rsq.
9702/88=rsq.
110.25=rsq.
√110.25=r
10.5cm=r, r=10.5cm.
volume of a sphere =4/3πrcube
=4/3*22/7*10.5*10.5*10.5
=1157.625/21
55.125cmcube.
volume of a sphere = 55.125cmcube ( ans).
it will help.
mark as brain list.
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