Answer: The flagpole is 12.1 feet high.
Step-by-step explanation:
We can solve this by using a ratio:
Actual height to shadow length. The fractions must have the same equivalent values.
5.5/10 = x/22 Cross multiply the numerator on the left times the denominator on the right, and the denominator on the left by the numerator on the right:
5.5(22) = 10x
121 = 10x Divide both sides by 10. (10s "cancel" on the right)
12.1 = x
The flagpole is 12.1 feet high.