A rectangular field is 90m by 70m.A man walks around it at the rate of 4km per hour.What time will he take in making 5 rounds?( This Question is based on --- PERIMETER )I need this Question's full solution .Plz.help to solve this question.
Answers
Answered by
5
Perimeter of the field =2 (l+b)
=2 (90+70)m
=320m
Total distance covered by the man=(320×5)m
Walking speed of the man = 4km/hr=4000m/hr
Hence the requir
ed time for the man=320×5÷4000hr
=1600÷4000hr
=16÷40hr
=16×60÷40min=24min
=2 (90+70)m
=320m
Total distance covered by the man=(320×5)m
Walking speed of the man = 4km/hr=4000m/hr
Hence the requir
ed time for the man=320×5÷4000hr
=1600÷4000hr
=16÷40hr
=16×60÷40min=24min
Answered by
0
2(l+b)=2(70+90)=320m
Perimeter=320m
As we know
Speed =distance/time
4.5/18=10/9
10/9=320/t
t=280sec
Time taken in 5 rounds=280.5=1400sec
Perimeter=320m
As we know
Speed =distance/time
4.5/18=10/9
10/9=320/t
t=280sec
Time taken in 5 rounds=280.5=1400sec
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