Answer:
c squared - a squared = b squared
Step-by-step explanation:
Since a squared + b squared = c squared
With these values it would equal 14 squared - 7 squared = c squared
Then after you find c squared, find the square root of it and there you have go your answer!
Probably C)
it starts with 8-foot diameter, and it is supposed to get smaller
This is just a theory
the first one is the answer to #1
and the second one is the answer to #2
take square root and subtract y2 from y1 and x2 from x1