Question

the lengh and the breadth of a rectangular field are in ratio 4:3 its area is 6912 m^2 find its cost of fencing the field at 2.50rs per m​

Answer 1

Let length and width be 4x and 3x.

Area of rectangular field =6912m^2

Length and width =?

Area =l*b

6912m^2 =4x *3x

6912m^2 =12x^2

6912m^2 /12=x^2

576m^2 =x^2

√576=x

x=24

Length =4*24=96

Width =3*24=72

To find cost of fencing we need to find perimeter.

Perimeter of rectangular field =2(l+b)

=2(96+72)

=2*168

=336m

Cost of fencing =Perimeter of rectangular field *Rate of fencing

Cost fencing = 336*2.50

=rs 84,000

Hence total cost = rs 84,000

Mark it as a btainlest answer.