Answer:
the height of the telephone pole is 40 feet
Explanation:
The computation of the height of the telephone pole is shown below:
Let us assume the height be x
Now we used the following formula
= Height ÷ Shadow length
x ÷ 20 feet = 6 feet ÷ 3 feet
Now do cross multiplication between two sides
So
x = 40 feet
hence, the height of the telephone pole is 40 feet
And this is height, not a night