GIVEN: The ratio of the length(l) and breadth(b) of a rectangular field = 3: 2 and perimeter of the field = 100 meter FORMULA USED: The perimeter of the rectangular field =2(l+b) CALCULATION: Let Length and Breadth be 3x and 2x ⇒ The perimeter of the rectangular field =2(l+b) ⇒100=2(3x+2x) ⇒100=10x ⇒x=10 ∴ Length of rectangle = 3x = 3 × 10 = 30 meter