Question

The Volume of hemisphere is 19404 cm³.What is the radius of the hemisphere?

• A. 21 cm
• B. 27 cm
• C. 29 cm
• D. 31 cm

Answer 1

Answer:

A. 21 cm

$Volume = 155232 cm^3$

Volume of hemisphere $=\frac{2}{3}\pi{r^3}$

=>\frac{2}{3}\pi{r^3}=19404

=>\frac{2}{3}\times{\frac{22}{7}}\times{r^3}=19404

=>r^3=9261

$r=21cm$