A person can walk at 3.6 km/hr. how long will he take to go around a
rectangle of sides 30 m and 40
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Answer:
The person will take 14 second to go around the rectangle.
Solution:
Speed of the person = 3.6 km. p. h
Distance. = Perimeter of rectangle
= 30 m + 40 m + 30 m + 40 m = 140m
Therefore, speed of the person per minute should be,
3.6 km / 60 = 0.6 km = 600m p. min
Therefore, speed of the person per second should be,
600 m / 60 = 10m p. sec
Therefore time taken to cover 140 m should be,
140m / 10m = 14 seconds
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