Question

the area of a square field is 81 hectares.find the cost of fencing with a wire at the rate of RS.2.25 per m.

Answer 1

1 hectare = 10000 square meters.
81 hectare = 810000 square mts.
Square field, so side of square =root of (810000)=900

 

Perimeter of field =4×900=3600

Fencing cost = 900×2.25=rs 2025

Answer 2

The cost of fencing the square field is Rs. 8100

Step-by-step explanation:

Area of square field = 81 hectare

1 hectare = 10000 sq.m.

So, 81 hectare = 810000 sq.m.

So, Area of square field = 810000 sq.m.

Area of square=$Side^2$

So, $Side^2 = 810000\\Side = \sqrt{810000}\\Side = 900$

Perimeter of square = $4 \times side$

Perimeter of square field = $4 \times 900 = 3600 m$

Cost of fencing 1 m = Rs.2.25

Cost of fencing 3600 m = 2.25 \times 3600= Rs.8100

Hence The cost of fencing the square field is Rs. 8100

#Learn more :

The area of a square field is 100 hectares.Find the length of its side and the cost of fencing the boundary of the field at the rate of rs.5.20

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