Multiple choice

To cover an area of 49 m2, 25 square slabs were needed. Find the length of each slab.

  1. 140 cm

  2. 14 cm

  3. 40 cm

  4. 196 cm

  5. None of these
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A Correct answer
Explanation

Total area = 49 m^2. Area of one slab = 49 / 25 = 1.96 m^2. Side of square slab = sqrt(1.96) = 1.4 m. 1.4 m = 140 cm.

AI explanation

The total area to be covered is 49 square metres, and this is divided equally among 25 square slabs. The area of a single square slab is 49 / 25 = 1.96 square metres. Taking the square root of the area gives the side length of the square slab, which is 1.4 metres. Converting this length into centimeters by multiplying by 100 gives 140 cm.

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