Question

The length of a rectangular field is5:3 and it's area is 3.75 hectares The fence for the land is rs50/m how much does it cost​

Answer 1

Answer:

I hectare =10000m^2

3.75 hectare = 37500m^2

Ratio of length and breadth is 5:3

Let their common factor be x

then length =5x and breadth = 3x

Area of rectangular field is length ×breadth

37500=5x×3x

37500=15x^2

x^2=37500/15

x^2= 2500

x=50m

Length =5x = 5×50=250m

Breadth =3x=3×50=150m

Total perimeter = 2(l+b)

=2(250+150)

=2(400)

= 800m

Cost of fencing per meter = Rs. 5

Total perimeter = 800m

Total cost of fencing = 800×5

= Rs.4000

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