1. A rectangular field has its length and breadth in the ratio of 6:5 respectively A man riding a bicycle completes one lap of this field along its perimeter at the speed of 19.8 km/h in 2 min What is the area of the field ?






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  • By: anil on 05 May 2019 01.19 am
    here the speed of cycle is given = 19.8 km/hr = 19.8 × $$frac{5}{18} $$ m/s = 5.5 m/s Time = 2 min = 120 sec Distance = speed × time Distance = 5.5 × 120 = 660 m As length : breadth = 6:5 Length = 6y Breadth = 5y Perimeter = 660 m 22y = 660 y = 30 m So length = 180 m Breadth = 150 m Area = 180×150 = 27000 sq mtr
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