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50 square stone slabs of equal size were needed to cover a floor area of 72 sq.m. Find the length of each stone slab.

A. 110 cm

B. 115 cm

C. 120 cm

D. 125 cm

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Correct Answer :

C. 120 cm

Area of each slab =

\frac{72}{50} m^{2} = 1.44 m^{2} L e n g t h o f e a c h s l a b = \sqrt{1.44} = 1.2 m = 120 c m

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