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A 5m wide cloth is used …

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A 5m wide cloth is used to make a conical tent of base diameter 14m and height 24m find the cost used at the rate of RS.25per meter

    • Posted by Shreya Tiwari 8 years ago

    CBSE > Class 10 > Mathematics
    • 3 answers

    Mohit Sharma 7 years, 10 months ago

    Solution:-
    Let the slant height of the cone be 'l' meters.
    height = 24 m and diameter = 14 m or radius = 7 m. 
    Then according to the question.
    l² = h² + r²
    l² = 24² + 7²
    l² = 576 + 49 
    l² = 625
    l = √625
    l = 25 m
    So, the slant height of the cone is 25 m.
    Now, 
    Curved Surface Area of the cone = πrl
    = 22/7*7*25
    CSA = 550 sq m
    Now, length of the cloth used = Area/ width of the cloth
    = 550/5
    Length of the cloth used = 110 m 
    Cost of cloth = Rs. 25 per meter
    Total cost of clothe used = 110*25
    = Rs. 2750
    Answer.

    0Thank You

    Payal Gupta 8 years ago

    Hi

    0Thank You

    Payal Gupta 8 years ago

    2.5m

    0Thank You

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