In the figure below, ABC is a sector with center A. If arc BC has length 4π, wh...【小站备考】

GRE®

登录注册

Question 11 Enter your answer as an integer or a decimal in the answer box. Backspace to erase.

笔记

反馈

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16