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The radius of the base of a Conical tent is 12 m. The tent is 9 m high. Find the cost of canvas required to make the tent, if one square metre of canvas costs 120 (Take π = 3.14 )
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- ₹ 67, 830
- ₹ 67, 800
- ₹ 67, 820
- ₹ 67, 824
- ₹ 67, 830
Correct Option: D
Slant height of the tent (l) = √12² + 9² = 1√144 + 81
= √225 = 15 metre
∴ Curved surface area of the tent = πrl = (3.14 × 12 × 15) sq. metre
∴ Total cost = (3.14 × 12 × 15 × 120) = 67824
