选择题
2007 AMC 8 Problem 16: Circle Circumference-Area Graph
Amanda Reckonwith draws five circles with radii 1, 2, 3, 4 and 5. Then for each circle she plots the point (C, A), where C is its circumference and A is its area. Which of the following could be her graph?
A.
Graph A
B.
Graph B
C.
Graph C
D.
Graph D
E.
Graph E