Question

What is the volume of the hemisphere with radius $21$ cm?

• A. $16404$ $c{m}^3$
• B. $18404$ $c{m}^3$
• C. $19404$ $c{m}^3$
• D. $17404$ $c{m}^3$

Answer 1

Answer: (C)

Given, radius of hemisphere $=21$ cm

Volume of the hemisphere $=$ $\frac{2}{3}\pi r^3$
$=$ $\frac{2}{3}\times \frac{22}{7}\times {21}^3$
$=$ $19404$ $c{m}^3$