Question

An iron cylinder of length $8\text{cm}$ has a diameter of $4\text{cm}$. Find the volume of the cylinder in ${\text{cm}}^3$?

• A. 100.6

Answer 1

The correct option is A 100.6

Given:
The diameter of the cylinder, $\text{d}=4\text{cm}$
So, the radius of the cylinder, $\text{r}=\frac{\text{d}}{2}$
$\Rightarrow$ $\frac{4}{2}=2\text{cm}$

The height of the cylinder, $\text{h}=8\text{cm}$

The volume of the cylinder, $V=\pi {\text{r}}^2\text{h}$

$\Rightarrow V=\frac{22}{7}\times 2^2\times 8=\frac{704}{7}$

$\therefore V=100.6{\text{cm}}^3$