Question

The sides of the rectangular field are in ratio 3:4.if the total area of field is 10,800sq.m the cost of the field at the rate of rs 10 per meter is:

Answer 1

Let the length and breadth be 3x and 4x.
Atq,
$3x \times 4x = 10800m {}^{2}$
So, x=30
Length =3x=90
Breadth =4x=120
Perimeter of field =2(90+120)=420
Cost of field =₹4200