Wz and xr are diameters of circle c. the diagram is not drawn to scale. what is the measure of convex arc upper zwx?

The measure of the convex arc is given by the following relationship:
 WZ + 41 = ZWX
 From here, we must clear We must replace the value of WZ.
 The value of WZ is given by
 WZ=180
 We have then:
 ZWX = 180 + 41
 ZWX = 221 degrees
 
 the measure of convex arc upper ZWX is:
 ZWX = 221 degrees