A person walks with the speed of 4 km/hr. How long will he take to go around a square field four times, the area of which being 900 sq. metres.
Answers
Answered by
1
Step-by-step explanation:
area=2500m^2
side of square=50m
\sqrt{2500 {m}^{2} } = 50m
2500m
2
=50m
perimeter of square=4×side=4×50m=200m
5 times of square=200m×5=1000m(1km)
time taken by the person to walk=15min
\frac{4km}{60min} \times 1km = 1km \: per \: 15min
60min
4km
×1km=1kmper15min
Answered by
3
Answer
speed in m/s=1.111
Speed=Distance/time
so, time=Distance/speed
time= 900/1.111
time=810.08sec
time of 4 times = 810.08×4=3240.32sec
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