Arshad can cover a circular path of radius 21 m in 44 seconds.How my h time he will take to cover a distance of 3 km?
Answers
Step-by-step explanation:
21meter = 44 second
to 1 meter = 44/21 second
we know 1km = 1000 m
to 3km =3000m
to 3000 m × 44/21 s
=6285.71 second Ans
Answer:
Arshad can cover a circular path of radius 21 m in 44 seconds. He will take 3000 seconds or 5/18 hours to cover a distance of 3 km.
Step-by-step explanation:
Let's first calculate the speed of Arshad.
Speed = Distance / Time
The distance covered = The circumference of the circular path.
Circumference = 2πr
Doing the substitution we have:
Circumference = 2 × 22/7 × 21 = 132 meters
The speed = 132/44 = 3 m/s
Let's convert this to km/h
the speed = 3 × 18/5 = 10.8 km/h
Now that we have the speed and distance, we can get the time.
Time = Distance/speed
Time = 3/10.8 = 5/18 hours
This is equal to = 5/18 × 3600 = 3000 seconds.