Question

Find the total surface area of cone whose radious is 2r and slant height is 1/2

Answer 1

Hello Anurag !

Answer:

TSA = 15.708 units²

Step-by-step explanation:

Given :

Radius of the base of a cone = 2 units

Slant height = 1/2 units

Formula :

Assuming that the cone mentioned in the question is a Right Circular cone,

TSA of the cone = πr(r + l) units²

• Where r is the radius of the base of the cone.
• Where l is the slant height.

Procedure :

TSA = π × 2[2 + (1/2)]

⇒ TSA = π × 2 × (5/2)

⇒ TSA = 5π units²

⇒ TSA = 15.708 units².

OR Assuming π = 22/7,

TSA = 15.7 units².

Thanks !