A baker can decorate 5 cakes in 3 hours.

How many cakes can he decorate in 4 days if he works 9 hours each day?

A table measures 3.5 feet long and 2.745 feet wide. How many feet longer is it than wide?

In one day, the baker works for 9 hours. In 4 days, the baker works for 4 * 9 = <<4*9=36>>36 hours.

Therefore, the baker can decorate 5 * 12 = <<5*12=60>>60 cakes in 36 hours.
A table measures 3.5 - 2.745 = <<3.5-2.745=0.755>>0.755 feet longer than wide. Answer: \boxed{0.755}.