A circular paving stone with a diameter of 12 inches is shown in the diagram. Pieces of colored glass have been
glued around the border of the stone to a width of 2 inches, as shown.
o
12 in.
What is the area, in terms of z, of the part of the paving stone that is covered with the pieces of colored glass?
A36 in?
B16z in?
C 25 in?
D 20 in?