Notice the picture below

you have the center, the h,k, all you really need is the radius "r"
Answer:
19
Step-by-step explanation:
1st you will use a^2+b^2=c^2
next you plug them in so it would be a^2+16^2=25^2
next you would solve it to a^2+256=625
then you would get 369 and square root it
and your answer will be 19.2.
Answer:
x ≤ 10
Step-by-step explanation: