Solve the all parts of given question:
Question: A camera with a 50.0 mm focal length lens is being used to photograph a person standing 4.5 meters away.
Part A: How far, in centimeters, must the film be from the lens?
Part B: If the film is s=36.0mm high, what percent of the width of the film will a 1.55m tall person take up?
I need tutor help to solve the above question.