Question

A square lawn has a side that is 18 cm long. How much wire will be needed to fence the lawn?Also,find cost of fencing at rate if rs.2 per metre.

Answer 1

Perimeter of square = wire will be needed to fence the lawn

Perimeter of square = Side×4
=18×4
=72 cm
1m= 100 cm
72cm=0.72m
Cost of fencing = 0.72 ×2
= ₹ 1.44

MARK MY ANSWER AS BRAINLIEST

Answer 2

Question:

A square lawn has a side that is 18 cm long. How much wire will be needed to fence the lawn? Also,find cost of fencing at rate of Rs.2 per metre.

Answer:

• Cost of fencing the lawn is ₹ 144.

Solution:

For fencing the lawn, we should take the perimeter of the lawn.

Perimeter of a square lawn = 4 × Side

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 4 × 18 m

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 72 m

So, 72 metre wire will be needed to fence the lawn.

Cost of fencing one metre = ₹ 2

∴ The cost of fencing 72 m = 72 × ₹ 2

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀= ₹ 144.

★Total cost of fencing the lawn is ₹ 144.