A person walks at 3 km/hr . How long will it take to go round a square field 5 times the area of which being 2025 metre square
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Area of the square field = 2025sq.m
Also, area of the field = a ^2(a = side)
So, ATQ, a^2 = 2025sq.m
or a = √2025m^2
Therefore a = 45m.
Now, perimeter of square = 4 × a = 4 × 45m = 180m
Distance covered while going 5 rounds = 180m × 5 = 900m.
Speed of the man = 3km/hr. = 3000m /60min.
Therefore Time = Distance/Speed = 900m/3000m × 60min. = 18min.
Also, area of the field = a ^2(a = side)
So, ATQ, a^2 = 2025sq.m
or a = √2025m^2
Therefore a = 45m.
Now, perimeter of square = 4 × a = 4 × 45m = 180m
Distance covered while going 5 rounds = 180m × 5 = 900m.
Speed of the man = 3km/hr. = 3000m /60min.
Therefore Time = Distance/Speed = 900m/3000m × 60min. = 18min.
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