A rectangular field is 72m by 58m. Amar
walks round it at the rate of 3km per hour. What time will she take in taking 2 rounds?
Answers
Answered by
48
the perimeter of the field is 2(l+b)=260m
convert 3km/hr in m/s=5/6m/s
2 rounds of the field gives the total length is 520m
so, the time taken to 2 rounds of the field is 520*6/5=624s=10min24sec
convert 3km/hr in m/s=5/6m/s
2 rounds of the field gives the total length is 520m
so, the time taken to 2 rounds of the field is 520*6/5=624s=10min24sec
Answered by
25
Answer:10 min 24 secs
Step-by-step explanation:
1.First take out the
perimeter=2(72×58)m=260m.
2.Then, take out the double of field to
see how much distance he covers
in 2 rounds=2×260m=520m
3.Take out the speed he walks in 1.
min=3000/60m=50m.
4.Since, time needed to walk 2
times around the field is
Distance/Speed=Time. Therfore,
520/50 mins=10.4 mins
5.Then, convert these mins to
secs=10.4 min=624 secs.
6.Last step, convert 624 secs into
mins=624/60 mins= 10 mins 24
secs.
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