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      Question

      The volume of a solid cube is 2744 m3. If

      whole cube is to be painted at a rate of Rs. 11 per m2, then what will be the cost of painting the cube?
      A Rs. 12236 Correct Answer Incorrect Answer
      B Rs. 11936 Correct Answer Incorrect Answer
      C Rs. 12936 Correct Answer Incorrect Answer
      D Rs. 12836 Correct Answer Incorrect Answer

      Solution

      Let the edge length of the cube = โ€˜aโ€™ metres Then, volume of the cube = a3 = 2744 So, a = 2744(1/3) = 14 So, total surface area of the cube = 6a2 = 6 ร— 142 = 1176 m2 So, cost of painting the cube = 1176 ร— 11 = Rs. 12936

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