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    The length, breadth, and height of a room are 10 m,8 m and 6 m respectively. Find the cost of white washing the walls of the room and the ceiling at t
    Question

    The length, breadth, and height of a room are 10 m,8 m and 6 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of ₹7.50 per m².

    A.

    ₹ 2,220

    B.

    ₹ 1,850

    C.

    ₹2, 150

    D.

    ₹2,000

    Correct option is A

    l = 10 m, b = 8 m, h = 6 m
    Area of face walls and celling
    = 2h(l+b)+lb
    = 2×6(10+8)+10×8
    = 296 m²
    Cost of white washing per m² = ₹7.50
    96 m² = 296×7.50
    = ₹2220

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