Q. 65.0( 5 Votes )

# The radius of a c

Answer :

Given.

Radius of conical tent is 4 m

Slant height of conical tent is 5m

Formula used/Theory.

CSA of cone = πrl

⇒ As the conical tent is not on ground

∴ only CSA is required to construct the tent

CSA of conical tents = 3.14 × 5 × 4

= 62.8 m^{2}

Let length of cloth be x cm

∴ Area of Cloth = 1.25 × x m^{2}

If 12 tents are to be constructed

Then area of cloth required to make 12 conical tents is

12 × 62.8 m^{2}

= 753.6 m^{2}

1.25 m × x m = 753.6 m^{2}

x = = 602.88 m

If 1m length of canvas cost Rs. 20

Then 602.88 m length of canvas cost Rs. 20 × 602.88

= Rs. 12056.7

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