30 square stone slabs of equal size were needed to cover a floor area of 50.7 sq.m. Find the length of each stone slab?	Choose the correct answer:	A) 130 cm	B) 767 cm	C) 88 cm	D) 666 cm	E) 776 cm

Rationale: "area of each slab = 50.7 / 30 m 2 = 1.69 m 2 length of each slab √ 1.69 = 1.3 m = 130 cm"
Answer: A