Can anyone help me with this question?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

What is 140 squared pleas me i am dumb