The ratio between the length and the breadth of a rectangular park is 1 : 2. If a man cycling along the boundary of the park at the speed of 6 km/hr completes one round in 6 min, then the area of the park (in sq. m) is?	Choose one:	A) 600m	B) 6000 m	C) 20000 m	D) 100 m	E) 2000 m
Perimeter = Distance covered in 6 min. = (6000 x 6)/60 m = 600 m.   Let length = 1x metres and breadth = 2x metres.   Then, 2(1x + 2x) = 600 or x = 100.   Length = 100 m and Breadth = 200 m.   Area = (100 x 200) m2 = 20000 m   20000 m
<result>C</result>
The ratio between the length and the breadth of a rectangular park is 1 : 2. If a man cycling along the boundary of the park at the speed of 6 km/hr completes one round in 6 min, then the area of the park (in sq. m) is?