9. Find the length of the shadow

One breezy evening, a person decides to enjoy the climate by taking a stroll outside. After a few minutes of walking, he crosses a lamp post. If the person is 123 \(cm\) in height, and they are walking at a speed of 1.5 \(m/s\), find the length of the person's shadow above the ground after 8 seconds. Also, the length of the lamp post is 6.15 \(m\) above the ground.

 

The length of the shadow is \(m\) above the ground.

 

[Note: Round off the answer obtained to one decimal places]