Question

If u answer this question correctly I will mark as brainliest. A train moving at 72 km / hr crosses a platform in 30 seconds and a pole present on platform is 18 seconds what is the length of the platform in metre

Answer 1

Answer:

Step-by-step explanation:

Ok so if 1 hr=3600 seconds

Then 30 sec= 30

-----

3600

We need to convert it into m/s

=72*5

---

18

72 will be cut with 18 as 18*4=72

now, 4*5

20

=20m/s

Now as the train crosses the platform in 30 seconds then

20m*30

=600m

Now 600*18(far from the pole)

Here is your answer

=10800 m

Thus, the platform is of 10800 meters and 10.8 km in kilometers