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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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