81, if you mean 9 Squared.
Ok what am I supposed to answer?
Answer: 72/48 unless you have to simplify which would be 3/2 or do you want decimal?
Step-by-step explanation:
Hello:
the standard equation of a circle : <span>(x – h)2 + (y – k)2 = r2
ridus : r center A(h , k )</span>
