Question

Find the volume of cylinder having height of 21 cm and area of base as 138 CM square

Answer 1

Answer:

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Answer 2

Volume = $2898 \ cm^3$

Step-by-step explanation:

Here, we are asked to find out the volume of cylinder.

We are given its height as 21 cm and the base area as 138 sq cm.

Before solve it, just try to remember the formula of volume of cylinder.

We know it is;

$Vol = \pi r^2 h$

In this formula, 'r' is the radius of circle (base) and 'h' is the height. (refer figure 1)

• If we separate this, we get.

$Vol = \pi r^2 \times h$

• Where, $\pi r^2$ is the area of base and 'h' is the height.  (refer figure 2)

• Now, we can say that,

Volume = $Base \ area \times height$

Thus, volume = $138 \times 21 = 2898 \ cm^3$