riya is moving along a circular track with a speed of 20m /s. if she dod 7 rounds of the track in 11 sec amd the radius of the track is n meter. what is the value of n[ pie =22/7]
Answers
Answer:
The answer is 5meters.
Explanation:
First as she ran 7 rounds in 11 sec.
therfore time=11sec.
Now, also her speed is 20m/s.
we know that, distance=speed*time
>20*11=220
Therefore she ran 220meters.
now this was the distance of 7 rounds
but for 1 round 220/7.
now perimeter of circle=2pieR
220/7=2*(22/7)*R
2R=(220/7)*(7/22)
R=10/2
Therefore tbe radius of the track is 5 meters.
Answer:
5 meters
Explanation:
First as she ran 7 rounds in 11 sec.
therefore time = 11seconds
Now , also her speed is 20m/s.
we know that, distance=speed*time
>20x11=220
Therefore she ran 220meters.
now this was the distance of 7 rounds
but for 1 round 220/7.
now perimeter of circle=2pieR
220/7=2x(22/7)xR
2R=(220/7)x(7/22)
R=10/2
Therefore the radius of the track is 5 meters.
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