Question

Find the distance of $\text{COM}$ of a solid hemisphere of radius $16\text{cm}$ from its geometric centre.

• A. $36\text{cm}$
• B. $12\text{cm}$
• C. $6\text{cm}$
• D. $4\text{cm}$

Answer 1

The correct option is C $6\text{cm}$

Let $\text{O}$ be the geometric centre of the hemisphere.
We know that $\text{COM}$ of a solid hemisphere lies at a distance of $\frac{3R}{8}$ from its geometric centre $\text{O}$


Given, $R=16\text{cm}$
$\therefore d=\frac{3R}{8}=\frac{3\times 16}{8}=6\text{cm}$