Question

A rectangular piece of land measures 0.8 km by 0.6 km. Each side is to be fenced with
three rows of wire. Find the length of the wire needed. If the cost of fencing is 250 per
metre, find the total cost of fencing the land​

Answer 1

Given a rectangular piece of land with dimensions length(l)=.8km and breadth= .6km

To find: the cost of fencing the land

Perimeter of the land= 2(l+b)

=2(.8+.6)

= 2× 1.4=2.8km

Wire needed to fence three rows=3×2.8= 8.4km

=8.4×1000=8400m

(1km=1000m)

Cost per metre=250Rs

Therefore cost for fencing 8400m= 8400×250=21,00,000Rs