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A spherical ball has a surface area of $\dfrac{792}{7}$sq. m. Find its volume.

7 sq.cm.
792/7 cu.cm.
792π/7 cu.cm.
792 cu.cm.
Explanation:

Surface area =$\dfrac{792}{7}$

∴$ r^2 = \dfrac{792 \times 7}{7 \times 4 \times 22}$

∴ r = 3cm

Volume = $\dfrac{4}{3} \pi r^3$ = $\dfrac{4}{3} \times 3.142 \times 3^3$

= 104 cu.cm.
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