Answer:
C=2πr
r=D/2=10/2=5
C=2×3.14×5
C=31.4in
Angle ZXY = 41 degrees.
Step-by-step explanation:
If WX is parallel to ZY then angle XZY = 71 degrees.
Angle ZXY = 180 - 68 - 71 = 41 degrees.