Please help me to find area of semicircle

Me write an equation for the interior angles of this triangle that uses the triangle sum theorem

To make a monster appear large in a movie, a human actor wore a costume and walked through a scale model of a city. the scale used was 1 inch = 15 feet. the actor is 60 inches tall. how tall does the monster appear in the movie? question 5 options: 720 feet 75 feet 4 feet 900 feet

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.