Question

a rectangular piece of land measure 0.7 km by 0.5 km each side is to be fenced with 4 rows of wires what will be the required length of the wire

Answer 1

Answer:

9.6 km

Step-by-step explanation:

Find the length needed for 1 row:

Length of wire = 2(Length + Breadth)

Length of wire = 2(0.7 + 0.5)

Length of wire = 2.4 km

Find the length needed for 4 rows:

1 row = 2.4 km

4 rows = 4x 2.4 = 9.6 km

Answer: 9.6 km

Answer 2

Answer :

It is given in the question that,

Length of land, l = 0.7 km

Breadth of land, b = 0.5 km

We know that,

Perimeter = 2 × (l + b)

= 2 × (0.7 + 0.5)

= 2 × 1.2

= 2.4 km

Now, one round of fencing the piece of land will require 2.4 km of wire.

Thus, four rounds of fencing will require = 4 × 2.4 = 9.6 km