Answer:
1
Step-by-step explanation:
1 times anything equals the opisite number but in this case you are multiplying 1 by itself 999999999999 times and that equals 1
, .
........................................
A=pi(r)^2
45=pi(r)^2 divide by pi (3.14)
14.33=r^2 square root both sides
3.79=r round
r=4
