Subject
Quantitative Aptitude
Topic
Areas & Volumes
The ratio between the length and the breadth of a rectangular park is 3 : If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:
The ratio between the length and the breadth of a rectangular park is 3 : If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:
ক)
15360খ)
153600গ)
30720ঘ)
307200Explanation
Perimeter = Distance covered in 8 min. ={(12000/60)x 8)} m = 1600 m. Let length = 3x metres and breadth = 2x metres. Then, 2(3x + 2x) = 1600 or x = 160. So, Length = 480 m and Breadth = 320 m. So, Area = (480 x 320) m2 = 153600 m2.Related questions
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