a rectangular field is 75 m by 50 m . A person walks around it at the rate of 3 km per hour . What time will he take in completing 3 rounds.
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Answer:
25 minutes
Step-by-step explanation:
Length of rectangular field = 75 m
Breadth of rectangular field = 50 m
Perimeter of rectangle = 2 ( l + b )
= 2 ( 75 + 50 )
= 2 * 125
= 250 m
Speed of person = 3km/hr = 50 m/min
Distance = 5 * 250
= 1250 m
Time taken = Distance / speed
= 1250 / 50
= 25 minutes
Hence, time taken by man to complete 5 rounds is 25 minutes.
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