Ok i am pricing a driveway that measure as follows! The striaght on the driveway will be going 135 feet in and 30 feet wide for 40 feet of it and only 22 feet wide for the remaining 95 feet! Now there is a half circle they want. basically the half circle will have a driveway width of 22 feet! The circle will have a indisde radius of approx 30 feet! and then out side radius of 55 feet! I am not sure how to figure the sq footage here for this! Can someone give me direction. Also remember the half circle will be merged with the striaght! I am using stratford interlock made by hanson concrete products!