Question

A conical tent is 16m high and the diameter of its base is 24m. find the cost of canvas required to make the tent, if cost of 1m× m canvas is Rs 210.

Answer 1

here,
height of a conical tent=16m
Diameter=24m

we know that ,
radius is half of the diameter .
radius=24/2
radius=12m.

slant height=?
$we \: know \: that$

${l}^{2} = {r}^{2} + {h}^{2}$
${l}^{2} = {12}^{2} +{ 16}^{2}$

${l}^{2} = 144 + 256$

${l}^{2} = 400$

$l = 20m$

NOW,
The canvas will be used on the curved surface area of conical tent.

Curved surface area of cone =πrl
=22/7×12×20
=22/7×240
=22×34.29
=754.38sq .cm

The cost of canvas required to make the tent at the rate of ₹210
754.38×210
=1,58,419.80₹

THEREFORE,
$cost \: of \: canvas \: required \: to \\ make \: tent \: is \: 158419.8 \: rupees$

$hope \: this \: helps$