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Question
A man riding a bicycle, completes one lap of a square field along its perimeter at the speed of 39.6 km/hr in 1 minute 20 seconds. What is the area of the field?
Options:
A .  52900 sq.mts
B .  44100 sq.mts
C .  48400 sq.mts
D .  Cannot be determined
E .  None of these
Answer: Option C


Perimeter of square = Distance covered by man in 80 seconds = (39.6 * 5/18  * 18) metre

= 880 metre

Side of square = 880/4 = 220

Area of square = 220 * 220 = 48400 sq.metre



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