Question

Find the curved surface area of a right circular cone whose height is 8 cm and base of radius is 6cm. *​

Answer 1

Answer:

The curved surface area of cone is 1320/7 cm^2.

Answer 2

Answer :

›»› The curved surface area of a right circular cone is 188.57 cm².

Given :

• Height of a right circular cone = 8 cm.
• Base of radius of a right circular cone = 6 cm.

To Find :

• Curved surface area of a right circular cone.

How to solve?

Here, in this question we have to find the curved surface area of a right circular cone. so, firstly we need to find the slant height of right circular cone, after that we will find the curved surface area of a right circular cone.

Solution :

As we know that

→ (Slant height)² = (Radius)² + (Height)²

→ l² = r² + h²

→ l² = (6)² + (8)²

→ l² = 36 + (8)²

→ l² = 36 + 64

→ l² = 100

→ l = √100

→ l = 10

The slant height of a right circular cone is 10 cm.

Now,

As we know that

→ CSA of cone = πrl

→ CSA of cone = 22/7 * 6 * 10

→ CSA of cone = 22/7 * 60

→ CSA of cone = 1320/7

→ CSA of cone = 188.67

Hence, the curved surface area of a right circular cone is 188.57 cm².