Answer:
Explanation:
The girl is 54 inches tall.
Her Shadow is 36 inches
The flagpole has a shadow of 90 in long
So set up a proportion
Whose Shadow Shadow Length Actual height
Girl 36 54
Flagpole 90 x
36/90 = 54 / x Cross Mulltiply
36x =90 * 54
36x = 4860 Divide by 36
x = 4860/36
x = 135 inches.
Comment
Do you need the height in feet?
That would be 135/12 = 11.25 feet or 11 feet 3 inches.