Step-by-step explanation:
The height of the persion is

The height of the street light is

The distance from the person to the tree is

The length of the person's shadow is

Concept:
We will use the ratio below
Man's height IS TO Man's shadow AS Tree's height IS TO Tree's shadow
By applying the concept, we will have that
By using the similar ratio below, we will have

Hence,
The final answer is
