You are investigating the drive system of a conveyor used to transport the engine parts is made up of an open belt, which passes over two pulleys. The pulleys have diameters of $320$ mm and $200$ mm respectively and the distance between canters is $776$ mm $($A $=$ last two number on your ID$).$ You have been asked to determine the length of the belt, using trigonometric techniques, assuming the belt is in tension.