Question

The radius of cylender is 7cm and height is 21cm. find the volume
class 8th
cbse

Answer 1

Answer:

• Volume of the cylinder = 3234 cm³

Step-by-step explanation:

GIVEN

• The radius of cylinder is 7 cm.
• Height of cylinder is 21 cm.

TO FIND

• Volume of the cylinder.

FORMULA USED

• Volume of a cylinder = πr²h cubic unit

Here,

• Radius of cylinder is denoted by r.
• Height of cylinder is denoted by h.

USING FORMULA TO FIND VOLUME

• Volume of the cylinder = πr²h cubic unit
• Volume of the cylinder = π × 7 × 7 × 21 cm³
• Volume of the cylinder = (22 × 7 × 7 × 21)/7 cm³
• Volume of the cylinder = 22638/7 cm³
• Volume of the cylinder = 3234 cm³

Answer 2

Answer:

Volume of cylinder = $\bf{3,234cm^3}$

Step-by-step explanation:

Correct Question:

The radius of cylinder is 7cm and height is 21cm. Find the volume.

Given:

• Radius of the cylinder = 7cm
• Height of the cylinder = 21cm

To find:

• The volume of the cylinder

Formula used here:

Volume of the cylinder = $\sf{πr^2h}$ cubic units

• r = Radius
• h = Height
• π = $\sf\dfrac{22}{7}$ or 3.14

Solution:

Directly apply the values in the formula:

Volume of the cylinder = $\sf\dfrac{22}{7}$ $\times$ $\sf{7^2}$ $\times$ 21

Volume of the cylinder = 22 $\times$ 7 $\times$ 21

Volume of cylinder = $\bf{3,234cm^3}$

Final answer:

Volume of cylinder = $\bf{3,234cm^3}$