Pansy Point - 60 3/4" x 78 1/4".  
 
If you like to over-size your blocks and trim them so they are perfect, I would strongly suggest that you use a Bloc Loc ruler.  In Pansy Point I used the 6 1/2" Bloc Loc Half-Square Triangle ruler and the  1 1/4" x 2 1/2" Flying Geese ruler.