Who should attend. The course is designed for those who may have to conduct or participate in an aircraft accident investigation. This may be in the role of official investigator for a State or as an accredited representative/technical advisor of a manufacturer, operator or service provider.
Before electronic calculators, converting square varas (at 1 vara = 32.8748 inches) to acres was a tedious job. But if 1 vara = 33 1/3 inches, 3 varas are exactly 100 inches, 36 varas are exactly 100 feet, and 108 varas are exactly 100 yards. An easy division and some shuffling of the decimal point do the job.
There are 5280 feet in a mile. An acre is 43560 square feet. The perimeter of an acre, in a square, is 208.71 feet.per side. So, each lap around one acre is 834.84 feet. 5280 divided by 834.84 gives us the number of laps to reach one mile walking around one acre of land, which comes to a little more than 6.32 laps.