Multiple choice

A cube has edge length of 2 m. What is the cost of painting 4 faces of the cube at the rate of Rs. 6.25/sq.m?

  1. Rs. 25

  2. Rs. 75

  3. Rs. 50

  4. Rs. 100

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Length of edge of the cube = 2 m Surface area of 1 face of the cube = 2 m X 2 m = 4 sq.m Cost of painting 1 face = Rs. (6.25 X 4) = Rs. 25 Therefore, cost of painting 4 faces = Rs. (25 X 4) = Rs. 100

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