1.

If the surface area of a sphere is 1386 cm2, then its volume is:(Take π = \(\frac {22} 7\))1. 5418 cm32. 8451 cm33. 4851 cm34. 4581 cm3

Answer» Correct Answer - Option 3 : 4851 cm3

Given:

The surface area of the sphere = 1386 cm2

Formula used:

Surface area of a sphere = 4πr2

Volume of a sphere = (4/3)πr3

Calculations:

Surface area of a sphere = 4πr2

⇒ 4πr= 1386

⇒ 4 × (22/7) × r2 = 1386

⇒ r = 21/2 cm

 

Volume of a sphere = (4/3)πr3

⇒ (4/3) × (22/7) × (21/2)3 

⇒ 4851 cm3

∴ The volume of the sphere is 4851 cm3.



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