选择题
2006 AMC 8 Problem 7: Circle Radii
Circle X has a radius of π. Circle Y has a circumference of 8π. Circle Z has an area of 9π. List the circles in order from smallest to largest radius.
A.
X, Y, Z
B.
Z, X, Y
C.
Y, X, Z
D.
Z, Y, X
E.
X, Z, Y