The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 9 minutes, then the area of the park (in sq. m) is:
Choose the correct answer:
A) 153601
B) 153600
C) 153602
D) 153603
E) 194400
Perimeter = Distance covered in 9 min. =(12000/60) x 9m = 1800 m.   Let length = 3x metres and breadth = 2x metres.   Then, 2(3x + 2x) = 1800 or x = 180.   Length = 540 m and Breadth = 360 m.   Area = (540 x 360) m2 = 194400 m2.   Answer: 194400
<result>E</result>
The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 9 minutes, then the area of the park (in sq. m) is: