Question

A conical tent is 15m high and the radius of its base is 20m . Find the slant height of the tent . If the cost of 1m² canvas is Rs.84 , find the cost of the canvas required to make the tent​

Answer 1

Step-by-step explanation:

Vertical height= 15m

Radius= 20m

Slant height=?

Let slant height of conical tent be x

Therefore, by using Pythagoras theorem,

x^2 = (15)^2 + (20)^2

=> x= √(15)^2 + (20)^2

$\sqrt{ {15}^{2} } + {20 }^{2}$

Therefore, slant height x = 25 m

Surface Area of cone= πrl + πr^2

=> π(20)25 + π(20)^2

=> 900π m^2

Cost of 1m^2 = Rs.84

Therefore, cost of canvas required= 900π × 84 = Rs.237,504

Hope it helps!

Answer 2

Answer:

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Step-by-step explanation:

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