Question

A rectangular plot measuring
90 metre by 50 metre needs to be enclosed by wire fencing such that poles of the fence will be kept 5 metre apart. How many poles will be needed ?​

Answer 1

Length of the wire fencing

= perimeter

=2(90+50)=280 m

Two poles are kept 5 metre apart. Note that the poles are placed along the perimeter of the rectangular plot, not in a single straight line.

Hence, number of poles required

$\bf \huge{ = > \frac{280}{5} = 56}$

Answer 2

Answer:

perimeter of the plot = 2(90+50)

= 280m

no of poles = 280/5 =56m