Question

What is the lateral area of the cone to the nearest whole number? The figure is not drawn to
scale.

15,080 m2
25,133 m2
45,239 m2
50,265 m2

Answer 1

Answer:

The lateral surface area of the cone is $25120\ m^2$.

Step-by-step explanation:

We have.

Height of a cone is 60 m

Diameter of a cone is 10 m

Radius, r = 80 m

The lateral surface area of a cone is given by :

$A=\pi rl$

l is slant height of the cone,

$l=\sqrt{60^2+80^2} =100\ m$

Plugging all values in above formula,

$A=3.14\times 80\times 100\\\\A=25120\ m^2$

So, the lateral surface area of the cone is $25120\ m^2$.