You would divide 5 seconds by 60 seconds since there is 60 seconds in a minute and get 12. Then you would times 12 by 100 and get 1200. Kylie swung 12 times a minute. Then you would divide by 60 to get the swings in minutes. So it would take 20 minutes.
Since GAF is a right angle as indicated by the little square, GAC and CAF must add up to 90 degrees. Therefore, x is 90-63=27 degrees. The situation is the same for angle EAF. Hope this helps!
