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    Question

    A hall is in the shape of a rectangle with a length of 30

    metres and its perimeter is 90 metres. If the hall is to be tiled at Rs.10 per square metre, calculate the total cost of tiling.
    A Rs. 4500 Correct Answer Incorrect Answer
    B Rs. 5200 Correct Answer Incorrect Answer
    C Rs. 6800 Correct Answer Incorrect Answer
    D Rs. 4800 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the breadth of the hall = 'b' metres

    Then, perimeter = 2 × (30 + b) = 90

    So, b = (90 ÷ 2) - 30 = 15

    So, area of the hall = 30 × 15 = 450 m²

    So, cost of tiling = 450 × 10 = Rs. 4500

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