Question : Find the volume of a solid sphere whose diameter is 42 cm. (Use $\pi=\frac{22}{7}$)
Option 1: 38807 cm3
Option 2: 38808 cm3
Option 3: 38806 cm3
Option 4: 38805 cm3
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Correct Answer: 38808 cm 3
Solution :
Diameter = 42 cm
So, the radius, $r$ = $\frac{42}{2}$ = 21 cm
Volume of the sphere = $\frac{4}{3}\pi r^3$ = $\frac{4}{3}\times \frac{22}{7} \times (21)^3$ = 38808 cm
3
Hence, the correct answer is 38808 cm
3
.
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