Multiple choice

A marble tile measures 25 cm by 20 cm. How many such tiles will be required to cover a wall of size 4 m and 3 m?

  1. 240

  2. 41

  3. 230

  4. 40

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct answer. For the wall, L = 4 m = 400 cm, B = 3 m = 300 cm Area of the wall = 400 x 300 = 120000 cm2
For a marble tile, L = 25 cm, B = 20 cm Area = 25 x 20 = 500 cm2 Number of tiles = Area of the wall/Area of a tile = 120000/500 = 240

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