Calculate the indicated areas. All data are accurate to at least two significant digits.

The widths (in m) of half the central arena in the Colosseum in Rome are shown in the following table, starting at one end and measuring from the middle to one side at 4.0-m intervals. Find the area of the arena by the trapezoidal rule. 

Dist. from middle (m) Width (m) Dist. Width 0.0 4.0 55.0 54.8 54.8 24.0 28.0 45.8 42.0 42.0 8.0 12.0 16.0 20.0 54.0 53.6 51.2 49.0 32.0 36.0 32.0 36.0 40.0 44.0 37.2 31.1 21.7 0.0