What percentage of a full circle is the following sector? (Round to the nearest tenth of a percent.)

Note: The figure is not drawn to scale.

A sector of a circle contains a center angle that is 36 degrees. What percentage of the circle is the sector?

Two pizzas are made to the same dimensions. The only difference is that Pizza 1 is cut into pieces at 30° angles and Pizza 2 is cut at 45° angles. They are sold by the piece, the first for $1.95 per slice and the second for $2.25 per slice. What is the difference in total revenue between Pizza 2 and Pizza 1?