Question

A rectangular piece of land measures $0.7km$ by $0.5km$. Each side is to be fenced with four rounds of wire. What length of wire is needed.

Answer 1

Given length of rectangle field = 0.7 km

breadth of rectangle field = 0.5 km

Perimeter of rectangle field = $2[l+b]$

$=2[0.7+0.5]$

Perimeter of field = $1.2\times 2=2.4km$

length of filed fencing = $4P=4\times 2.4$

length of fence = $9.6km$

$\therefore$ length of wire needed is 9.6 km.