i think we need some more information or something is there any other information that they give you for this question?
Answer:

Step-by-step explanation:
Using the pythagorean theorem, you can find that the distance between the two points is
. Hope this helps!
Step-by-step explanation:
The answer for third is D, you have multiple choice in fourth which I can't see at all...
Answer:
press this link and u will get the answers
https://www.math.tamu.edu/~rosanna/141/WIR2_done.pdf
Answer:
r = 2.86
Step-by-step explanation: