the surface area of sphere is 7128sq.cm.what is its volume?
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Surface Area of a sphere = 7128 cm²
⇒ 4 (pi) r² = 7128
⇒ r² = (7128×7)/(4×22) = 81/7
⇒ r = 9√7 cm
Volume of sphere = (4/3)pi (r³)
⇒ (4×22×(9√7)³)/7
⇒ 64152√7 cm³
∴ Volume of sphere is 64152√7 cm³
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