Explanation
Compute the number of hours worked:
12 hours – 30 minutes = 11 hours and 30 minutes = 11 hours + 30 minutes
Convert the time to minutes:
(11 * 60) + 30 = 660 + 30 = 690 minutes
To calculate the length of wire produced:
Length of wire = 6.6 meters/minute x 690 minutes = 6.6 * 690 = 4554 meters