Equal Division of Cake with Rectangular Piece Removed

Problem:

You are given a rectangular cake with a rectangular piece removed.

The piece removed can be any size or orientation.

How will you cut the remaining cake into two equal halves with one straight cut.

Answer:

|------------

|              |

|      ____|

|___|

Solution: Now if you want a witty answer, just cut the cake at its width. ie. Look the cake fro its side. Lets say cake is 10 cm thick, cut it from 5ck thickness mark

:)

There is one more answer for Pure mathmaticians.

Anyone??