Question

Area of a square lawn is 18.4041 sq.m . find the cost of fencing at the cost of ₹22 per metre​

Answer 1

Answer:

Area of square lawn = 18.401 m²

S² = 18.401 m²

S =

$\sqrt{18.401} = 4.28$

S = 4.28m

Perimeter of Square lawn = 4 × side

= 4 × 4.28

= 17.12 m

Cost of fencing = 17.12 × 22

= Rs. 376.64

Answer 2

Correct Question -

• The area of a square lawn is 18.4041 sq.m. Find the cost of fencing it at the cost of ₹22 per metre​.

Answer -

• The cost of fencing the square lawn is Rs 377.52.

To find -

• The cost of fencing the square lawn.

Step-by-step explanation -

• Here, it is given that the area of a square lawn is Rs 18.4041 m² . We have to find the cost of fencing it at the cost of Rs 22 per metre. First let's find the side of the square lawn!

We know that -

$\underline{\boxed{\sf Area_{(square)} = (Side)^2}}$

Here,

• Area = 18.4041 sq.m.

Therefore,

$\sf \longrightarrow 18.4041 = (Side)^2$

$\sf \longrightarrow \sqrt{18.4041} = Side$

$\sf \longrightarrow 4.29 \: m = Side$

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• Now, let's find the perimeter of the square lawn!

We know that -

$\underline{\boxed{\sf Perimeter_{(square)}= 4 \times Side}}$

Here,

• Side = 4.29 m.

Therefore -

$\sf{\longrightarrow Perimeter = 4 \times side}$

$\sf{\longrightarrow Perimeter = 4 \times 4.29}$

$\sf{\longrightarrow Perimeter = 17.16 \: m}$

Given that -

• The cost of fencing per metre is Rs 22.

Thus, the cost of fencing the square lawn is -

$\sf{\longrightarrow 17.16 \times 22}$

$\sf{\longrightarrow Rs \: 377.52}$

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