Lateral areas-cones..ill give brainless and points

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Use multiples to write two fractions equivalent to 7/9. 14/18, 8/10 6/8, 21/27 10/12, 28/36 14/18, 21/27