Question

pl help me. with explanation pl ​

Answer 1

Step-by-step explanation:

let l & b be the length & breadth of rectangular field.

given: l:b = 5:3

total cost of turfing = 624.75 Rs

we know total cost of turfing

= total area of field*cost of turfing/m^2

hence

area of field = 624.75/0.85 = 735 m^2

also area of rectangle = l*b

but l = (5/3)*b

735 = (5/3)*b^2

b^2 = 441

taking square root

b = 21 m

hence l = (5/3)*21 = 35 m

perimeter = 2*(l+b) = 2*(21+35)=112 m