Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:
50 square stone slabs of equal size were needed to cover a floor area of 72 sq. m. The length of each stone slab is
(a)102 cm
(b)120 cm
(c)201 cm
(d)210 cm
Answer
Answer (as printed): B
Explanation
Area of each slab $=\left(\frac{72}{50}\right) \mathrm{m}^{2}=1.44 \mathrm{m}^{2}$. $$\text { ∴ Length of each slab }=\sqrt{1.44} \mathrm{m}=1.2 \mathrm{m}=120 \mathrm{cm} .$$