Question

Q5. A rectangular piece of land measures 0.7 km

by 0.5 km. Each side is to be fenced with 4 rows
of wires. What is the length of the wire needed?​

Answer 1

`Amount = 9.6km`

Step-by-step explanation:

Given

`Length = 0.7km`

`Width = 0.5km`

`Wires = 4`

Required

Determine the length of wire needed

First, we calculate the perimeter of the land.

`Perimeter = 2*(Length + Width)`

`Perimeter = 2*(0.7km + 0.5km)`

`Perimeter = 2*(1.2km)`

`Perimeter = 2.4km`

That is the amount needed for 1 row of wire.

For 4 rows, it would be:

`Amount = 4 * Perimeter`

`Amount = 4 * 2.4km`

`Amount = 9.6km`