Find the volume of a sphere with diameter as 21 cm. (The value of π is 22/7)

Correct option is A

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Given:
Diameter of the sphere = 21 cm
Radius of the sphere  $$= \frac{21}{2} = 10.5 \, \text{cm} \\[10pt]$$​​
Formula Used:
​$$\text{Volume of a sphere} = \frac{4}{3} \times \pi \times r^3 \\[10pt]$$​​
Solution:
​$$\text{Volume} = \frac{4}{3} \times \frac{22}{7} \times (10.5)^3 \\= \frac{4}{3} \times \frac{22}{7} \times 1157.625 \\= \frac{101871}{21} \\= 4851 \, \text{cm}^3$$​​