Question

The sides of a rectangular park are in the ratio 4:3 if its area is 2028 sq.m ,find the cost of fencing it at 3 rs. per metre ​

Answer 1

heya mate here's your answer ...

area =l*b

so, let the sides be 3x and 4x

>>4x*3x=2028>>12x=2028

>>x=2028/12=169.

actual sides=169*4 and 169*3=676 and 507.

sum=507+676=1183.perimeter=2*1183=2366

total cost=2366*3=rs.7098..

thanks....

Answer 2

Let the length of rectangular park be 4x

And bredth of park be 3x

area of the park =l× b

= 4x × 3x=2028

12x square = 2028

x square =2028/12

=169

x = 13

length of park = 4×13=52

bredth of park =3×13 =39

cost of fencing = 52×3 ×39×3

= 18252