UPSKILL MATH PLUS

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One breezy evening, a person enjoys the climate by taking a stroll outside. After a few minutes of walking, he crosses a lamp post. For example, if the person is 100 \(cm\) in height and is walking at a speed of 1.2 \(m/s\), find the length of the person's shadow above the ground after 7 seconds. Also, the size of the lamp post is 3 \(cm\) above the ground.
 
The length of the shadow is  \(cm\) above the ground.
 
[Note: Round off the answer obtained to one decimal place.]