Question

how long will a man take to run once round a circular track of radius 28 m at an average speed of 8 m/s? take pie =22/7

Answer 1

total distance to be covered=2πr=2*22/7*28=176m
speed=distance/time
time=distance/speed
= 176/8=22 seconds

Please mark it as brainliest

Answer 2

Answer:

The man will take 22 seconds to complete a round.

Step-by-step explanation:

The radius of track is 28 m.

The circumference of a circle is

$C=2\pi r$

The circumference of the track is

$C=2\times \frac{22}{7}\times 28$

$C=176$

The circumference of the track is 176 m. It means a man has to run 176 m to complete a round.

It is given that the average speed of a man is 8 m/s.

$Time=\frac{distance}{speed}$

$Time=\frac{176}{8}$

$Time=22$

Therefore the man will take 22 seconds to complete a round.