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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 |
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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 ⇒ 4πr2 = 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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