The ratio between the length and the breadth of a rectangular park is 3 : 4. If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 10 min, then the area of the park (in sq. m) is?
Choices
A) 244907.04 m  B) 244000 m  C) 244900 m  D) 400000 m  E) 154300 m
Perimeter = Distance covered in 10 min. = (15000 x 8)/60 m = 2000 m.   Let length = 3x metres and breadth = 4x metres.   Then, 2(3x + 4x) = 2000 or x = 142.86.   Length = 428.58 m and Breadth = 571.44 m.   244907.04 mrea = (428.58 x 571.44 ) m2 = 244907.76 m   244907.04 m
<result>A</result>
The ratio between the length and the breadth of a rectangular park is 3 : 4. If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 10 min, then the area of the park (in sq. m) is?