B
In the figure shown, the triangle is inscribed in the semicircle. If the length of line segment AB is 8 and the length of line segment BC is 6, what is the length of arc ABC?
A. 15p
B. 12p
C. 10p
D. 7p
E. 5p
图不会帖...想知道内接于圆 的三角形, 若是直角三角形,它的斜边就是直径????
还有一个问题 range 是不是表示数列里最大数与最小数的差 | 
