the length and breadth of a rectangular field are in the ratio 3:2. If the area of the field is 3456msquare find the cost of fencing the field at RS 3.50/msquare

 area=3456 sq.m

let length be 3x,let breadth be2x.

area=l *b

3456=3x*2x

3456=6x sq

x sq.=3456/6

x sq.=576

(576 is the square root of 24)

x=24m

3x=24*3=72m

2x=24*2=48m

(for fencing perimeter is must)

P=2(l+b)

P=2(72+48)

P=2(120)

P=2*120=240

P=240m

cost of fencing=Rs3.50/m sq.

cost=240*3.50

cost=Rs840