import cadquery as cq
w0=cq.Workplane('YZ',origin=(51,0,0))
w1=cq.Workplane('YZ',origin=(51,0,0))
r=w0.workplane(offset=-37/2).moveTo(71,49.5).box(58,55,37).union(w1.workplane(offset=-103/2).moveTo(-49,-26).cylinder(103,51))