What is the ratio of the net core area to the area of the circumscribing circle in square cores?$

What is the ratio of the net core area to the area of the circumscribi

1.	What is the ratio of the net core area to the area of the circumscribing circle in square cores?$
A.	0.58
B.	0.64
C.	0.70
D.	0.80
Answer» B. 0.64