Indirect costs are costs that are not directly accountable to a cost object (such as a particular project, facility, function or product). Indirect costs may be either fixed or variable.Indirect costs include administration, personnel and security costs. These are those costs which are not directly related to production.Some indirect costs may be overhead.ndirect costs may be either fixed or variable. Indirect costs include administration, personnel and security costs. These are those costs which are not directly related to production. Some indirect costs may be overhead.
Pregnancy is typically broken into three periods, or trimesters, each of about three months. Each trimester is defined as 14 weeks, for a total duration of 42 weeks, although the average duration of pregnancy is 40 weeks.
Actually, the only month that's four weeks (or 28 days) long is February â that is, when it's not a leap year. All the others are either 30 or 31 days. So, on average a month is 30.4 days long â or 4.3 weeks. Click here for a printable version of this chart showing how the weeks, months, and trimesters of pregnancy line up with each other.