Explanation:
Im not at a great place to answer them all, but hope this helps on answering them
So the first is 5/2. When you found that, you essentially found the 2 other sides of the "triangle".
You can use Pythagoras to find the length of PQ.



You can either keep it like that, or use a calculator to find that value. im not sure how the system accepts it. you'll do that for each one