unfortunately i only know how to do 6, so basically what you want to o is split up the complex shape into regular shapes. it can be separated into 3 shapes: 3 rectangles
a: 8.5 x 17 = 144.5 in
b = 16.5 x 16.5 = 272.25 in
c = 11 x 13 = 143
a + b + c = 559.75