Question

If the diameter of the base of a cone is 10 centimetre and its height is 12 centimetre then its curved surface area is

Answer 1

Answer:

use ^rl

Step-by-step explanation:

22/7×5×13=(22×65)/7

=1430/7

=204.3cm²

Answer 2

Given,

The diameter of the base of a cone = 10 centimeters

Height of the cone = 12 centimeters

To find,

The curved surface area of the cone.

Solution,

We can simply solve this mathematical problem using the following process:

As per mensuration;

The curved surface area of a cone of radius r and height h is represented as, Curved surface area = πr × √(r^2 + h^2)

Now, according to the question;

Diameter of the base of a cone = 10 centimeters

=> Radius of the base of a cone = (diameter of the base of a cone/2) = 10 centimetres/2 = 5 centimeters

Now, the curved surface area of the cone

= πr × √(r^2 + h^2)

= 22/7 × 5 × √(5^2 + 12^2) cm^2

= 22/7 × 5 × 13 cm^2

= 204.3 cm^2

Hence, the curved surface area of the cone is equal to 204.3 cm^2.