Question

the sides of a rectangular Park the sides of a rectangular Park are in ratio 4 ratio 3 is this area is 2352 metres square find the cost of fencing it at rupees 10.50 per metre

Answer 1

The cost of fencing the park is rs 2058

Answer 2

4x+3x=2352

7x^2=2352

x^2=336

x=18.3(approx)

4x=18.3*4=73.2,3x=18.3*3=54.9

length=73.2,breadth=54.9

to find the perimetre from area of a rectangular park  the formula is

P=2l+2(A/l)

given that

area =2352

perimetre=2*73.2+2(2352/73.2)

P=210.6(approx)

cost for fencing=210.6*10.5

2211.3