Physics help..fun problem but hard

Question

A Ball Is Held Above A Spinning Circular Platform. The Ball Is 1.3m Above The Circular Platform That Has A Diameter Of .67m And Makes One Complete Revolution In 2.5 Seconds. If The Platfom Has A Hole On The Edge Where The Fall Can Get Through And The Ball Falls At 1.8 M/s...when Should The Ball Be Release In Order To Go Through The Hole????

Answer 1

the time that takes the ball to reach the platform is 1.3/1.8= 0.722s

and the time for one revolution of the platform is 2.5 seconds. so wait for the hole to be aligned with the ball then drop it after 1.777s (2.5-0.722)

i hope i'm right