Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:
A rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing. If the poles of the fence are kept 5 metres apart, how many poles will be needed?
(a)55
(b)56
(c)57
(d)58
Answer
Answer (as printed):
Explanation
Perimeter of the plot $=2(90+50)=280 \mathrm{m}$. ∴ Number of poles $=\left(\frac{280}{5}\right)=56$