Sheet Metal and Non-Metallic Structures (Refer to Figure 6.) Determine the dimensions of A, B, and C in the flat layout. Setback = .252 Bend allowance = .345 a. A = .748, B = 2.252, C = 2.004 b. A = .748, B = 1.496, C = 1.248 c. A = 1.252, B = 2.504, C = 1.752