Question

4. A rectangular piece of land measuring 0.7 km by
0.5 km is to be fenced with four rounds of wires.
What length of the wire is needed?​

Answer 1

Yrr simpe perimeter nikal lo

2(l+b) krke and fir usko 4 se multiply kr do

2 * (0.7 + 0.5)

= 2 * 1.2

= 2.4 km

For one round = 2.4 km

for 4 rounds = 2.4*4 = 9.6 km

Khushi here✔️✌

Answer 2

✬ Length of wire required = 9.6 km ✬

Step-by-step explanation:

Given:

• Length and Breadth of rectangular piece of land are 0.7 km and 0.5 km respectively
• Each side of rectangle is to be fenced with 4 rounds of wire.

To Find:

• What length of wire is needed?

Solution: We have to cover 4 times the perimeter of the land measuring 0.7 km by 0.5 km.

∴ Total length of wire required is 4 times it's perimeter.

★ Perimeter of rectangle = 2 ( Length + Breadth)

$\small\implies{\sf }$ Perimeter = 2 ( 0.7 km + 0.5 km )

$\small\implies{\sf }$ Perimeter = 2 x 1.2 km

$\small\implies{\sf }$ Perimeter = 2.4 km

∴ Total length of wire required = 4 x 2.4 km = 9.6 km