How do you convert 3hr 30min into an integer form?

To convert 3 hours and 30 minutes into integer form, you can express the time entirely in minutes. There are 60 minutes in an hour, so 3 hours equals 180 minutes (3 x 60). Adding the additional 30 minutes gives a total of 210 minutes. Therefore, 3 hours and 30 minutes can be represented as the integer 210.