Question 23

Find the volume $$(in cm^3)$$ of a sphere of diameter 21 cm.

Solution

Diameter of sphere = 21 cm

Volume of sphere = $$\frac{4}{3}\times\pi r^3$$

= $$\frac{4}{3}\times\frac{22}{7}\times(\frac{21}{2})^3$$

= $$11\times441=4851$$ $$cm^3$$

=> Ans - (A)

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