一块圆形塑料板，要切成11块，最少要切几刀？7n5P'E/U*r4f+Z*S6|4y.X8V'g3J.W
算式：提示6f-W)z9K5|/q)o3}1u7n5P'E/U*r4f+Z*S6|4y.X8V'g3J.W
答： 最少要切9i)G(k'S:F)o7y刀。7n5P'E/U*r4f+Z*S6|4y.X8V'g3J.W