Question

Find the length of canvas required to make a conical tent 12m in diameter and 63m in slant height if the width of canvas is 2m.Also,find the cost of canvas at the rate of Rs15 per metre.

Answer 1

Diameter of the cone= 12m
Radius of the cone= 6m
Slant height of the cone= 63m

Therefore,
Area of the canvas used= area of the cone= pi.r(root (h^2+ r^2))
= pi.6(3969+36)= 1192.9m^2


Now
Width of the canvas= 2m
Area of the canvas= 1192.9 m^2

L×2=1192.9
L= 596.45m

Now
Cost of 1m canvas=15rs
Cost of 596.45m canvas= 15×596.45=8946.45rs

Answer 2

Step-by-step explanation:

hope it helps you.......