Here is an example for measuring your counter tops to estimate project cost.      
  X = finished edge

For every finished edge, add 3".

Measurement example is based on 1-1/2" edge detail.

    
  Surface area calculation:

Piece A: 120" x  27" divided by 144 = 22.5 sq. ft.
Piece B:   63" x  27" divided by 144 = 11.8 sq. ft.
Piece C:   66" x  42" divided by 144 = 19.2 sq. ft.

TOTAL surface area for the 3 pieces  = 53.5 sq. ft.

 * Final price is subject to final measurement by Anaheim Stone Works.