Question

If the front view of a cone is represented by an equilateral triangle of 60mm side . The area of itslateral surface is

Answer 1

Given,

The front view of the cone is represented as an equilateral triangle of side $60mm$

To Find,

Area of the lateral surface of the cone

Solution,

We can simply solve this mathematical problem by using its mathematical process.

We know,

Lateral height = Side of equilateral triangle = $60mm$

The base of cone = base of triangle = $60 mm$

Radius of cone $r = \frac{60}{2}$

$r = 30mm$

Formula:

Area of the lateral surface of the cone $= \pi r l$

Area $=\pi *30*60 mm^{2}$

Area $= 5654.866mm^{2}$

Hence, the area of the lateral surface of the cone is $5654.866mm^{2}$

Answer 2

Answer:

1800*Pi

Explanation:

angle of circular sector =180 degree

so radius=60*pi