扫描二维码，直接登录
题库 / Prep2007E1-PS-61
As shown in the figure above, a thin conveyor belt 15 feet long is drawn tightly around two circular wheels each 1 foot in diameter. What is the distance, in feet, between the centers of the two wheels?
~$\frac{15-π}{2}$~
~$\frac{5π}{4}$~
15-2π
15 -π
2π
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。