Question

The diameter of a conical tent is 14 cm and slant height is 21cm.Find the quantity of metalic sheet required to make the conical tent.​

Answer 1

Answer:

1078cm2 metallic sheet is needed to make it

Answer 2

The metalic sheet needed to make the tent is 0.0616 m^2

-We want to basically find the surface area of the conical tent,

-For a cone of base radius r and height h, surface area is given by,

A=π r ( r + (h^2+r^2)^0.5 )

-In our problem we have the diameter and the slant height

radius(r) = diameter / 2

slant height(L) = (h^2+r^2)^0.5

-Therefore we have,

r = 7cm = 7 * 10^-2 m

L = 21cm = 21 * 10^-2 m

-Our formula becomes,

A=π r ( r + L)

-By substituting the values of r and L we get A=0.0616 m^2