Question

Find the volume of a right cylinder if the radius of its base and height are 1.4 cm and 2 dm.​

Answer 1

Answer:

123.2 cu.cm.

Step-by-step explanation:

Given that:

Cylinder.

radius (r) = 1.4 cm

height (h) = 2 dm = 20 cm.

To find:

Volume

Proof:

We know that,

$volume \: of \: cylinder \: = \pi {r}^{2} h$

Now, on substituting the values, we have,

$v \: = \frac{22}{7} \times ({1.4})^{2} \times 20$

$v = \frac{22}{7} \times 1.4 \times 1.4 \times 20$

$v = 22 \times 0.2 \times 1.4 \times 20$

$v = 123.2 {cm}^{3}$

Therefore, the required volume is 123.2 cu. cm.

Hope it helps you.

Good Luck.