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    Question

    Find the cost of canvas 1.75 m wide at Rs. 50 per metre

    required to build a conical tent of base radius 21 cm and height 28 cm.
    A Rs. 60,000 Correct Answer Incorrect Answer
    B Rs. 66,000 Correct Answer Incorrect Answer
    C Rs. 70,000 Correct Answer Incorrect Answer
    D Cannot be determined Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Here, r = 21 cm and h = 28 cm ┬аSlant height, l = 35m Area of the tent =Area of canvas = rl = ( ┬а X 21 X 35)m┬▓ = 2310m┬▓ тИ┤ Length of canvas= ┬а ┬а= ┬а= 1320 m. тИ┤ Cost of canvas= 1,320 x 50 = Rs. 66,000

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