1103021609

SubArea: 
Level: 
Project ID: 
1103021609
Accepted: 
1
Clonable: 
0
Easy: 
1
Points A, B and C lie on the circle k. The line segment AC is the diameter of the circle and the lines AC and BC contain the angle of 60. Calculate the length of AC if the length of BC is 10cm. (See the picture.)
20cm
53cm
5cm
23cm