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a cylindrical pillar is 1 metre …

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a cylindrical pillar is 1 metre in diameter and 4.2 in height find the cost of whitewashing the curved surface of the pillar at the rate of rupees 15 per square metre

    • Posted by Isha Garg 5 years, 2 months ago

    CBSE > Class 08 > Mathematics
    • 4 answers

    Piyush Maurya 5 years, 2 months ago

    D of gillar=1(given) R of pillar=1/2 Curved surface of cylinder=2πrh Hight =4.2(given) =2×22/7×1/2×4.2=13.2 13.2×15=₹198

    0Thank You

    Kalu Ram Garasiya I Am A 5 years, 2 months ago

    78t

    1Thank You

    Anusha Chowdhury 5 years, 2 months ago

    Dimensions of the cylinder Piller is Diameter = d = 1 m Radius ( r )= d / 2 = 1 / 2 m Height = h = 4.2 m Curved surface area of the cylinder C.S.A = 2πrh = 2 × 22 / 7 × 1 / 2 × 4.2 = 13.2 square meters Cost of white washing the CSA of Piller per square meter = Rs 15 Cost of white washing the 13.2m Piller = 13.2 × 15 = Rs 198

    0Thank You

    Gaurav Seth 5 years, 2 months ago

    Dimensions of the cylinder Piller is

    Diameter = d = 1 m

    Radius ( r )= d / 2 = 1 / 2 m

    Height = h = 4.2 m

    Curved surface area of the cylinder

    C.S.A = 2πrh

    = 2 × 22 / 7 × 1 / 2 × 4.2

    = 13.2 square meters

    Cost of white washing the CSA of

    Piller per square meter = Rs 15

    Cost of white washing the 13.2m Piller

    = 13.2 × 15

    = Rs 198
     

    4Thank You

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