Compute each part of following problem given below:
Problem: The projection lens in a certain slide projector is a single thin lens. A slide 24.7 mm high is to be projected so that its image fills a screen 1.82 m high. The slide-to-screen distance is 3.10 m.
Part A: Determine the focal length of the projection lens.
mm
Part B: How far from the slide should the lens of the projector be placed to form the image on the screen?
mm
Please show clearly with details so that I can follow. Thanks.