How many minimum number's of whole square slabs are required for paving the floor 12.96 meters long and 3.84 meters side?
Correct answer: A. 216
- A. 216
- B. 192
- C. 108
- D. 256
Explanation
Convert the dimensions to centimetres: 12.96 m = 1296 cm and 3.84 m = 384 cm. The largest square slab has side gcd(1296, 384) = 48 cm, so the number of slabs is (1296 ÷ 48) x (384 ÷ 48) = 27 x 8 = 216 slabs. The likely mistake is option b, 192, from using an incorrect common divisor.
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