Could i please get some help with this, it would mean a lot, thank you !!

Question 1 A circular aperture is lit up by a laser with wavelength 607 nm. The central maximum on the screen 38.0 cm away has the same diameter as the circular aperture. What is the diameter of the circular aperture? Question 2 A 1.60-cm-tall candle flame is 3.40 m from a wall. You happen to have a lens with a focal length of 37.0 cm, and notice while playing around with it that there are two locations you can place the lens and form a well-focused image of the candle flame on the wall. With the lens in the location furthest from the wall, what is the height of the image? (Input a positive height)