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?
Choices
A) 120 cm B) 767 cm C) 88 cm D) 666 cm E) 776 cm

Rationale: "area of each slab = 72 / 50 m 2 = 1.44 m 2 length of each slab √ 1.44 = 1.2 m = 120 cm"
Answer: A