Question

Volume of a solid cylinder is $62.37cu.cm$. Find the radius if its height is $4.5cm$.

• A. $r=2.1cm$
• B. $r=4.1cm$
• C. $r=5.1cm$
• D. None of these

Answer 1

The correct option is A $r=2.1cm$

We have,

$h=4.5cm,r=?,Volume=62.37c{m}^3$

We know that the volume of the cylinder is

$=\pi r^{2}h$

So,

$62.37=\frac{22}{7}\times (r{)}^2\times 4.5$

$r^2=4.41$

$r=2.1cm$

Hence, this is the answer.