Find the length AC, rounded to two decimal places.
AD = sqrt [ AB^2 -BD^2 ] = sqrt [ 5.6^2 - 3.2^2 ]
DC = 6 - 3.2 = 2.8
AC =sqrt [ AD^2 + DC^2 ] = sqrt [ 5.6^2 - 3.2^2 + 2.8^2 ] = 5.38
