SubArea: Geometric sequencesLevel: CProject ID: 2010005508Source Problem: 1003109203Accepted: 0Clonable: 1Easy: 0The half-life of Copper-60 is approximately 24 minutes. How long will it take before its weight decreases from 1024g to 8g?2 hours 48 minutes3 hours 9 minutes3 hours 30 minutes2 hours 27 minutes3 hours 51 minutes