Çözüldü Making A Right Circular Cone from a Slice of Circle

If a slice of a circle whose central angle is sixty degrees and whose radius is twelve centimeters is curled to make a right circular cone, what is its height in centimeters?

A) 2√26
B) 8√2
C) √130
D) 2√30
E) 2√35

Solution in Turkish: https://www.sorumvar.net/frm/konula...oni-yapimi-cember-yayi-pisagor-teoremi.14893/

(Homework for the foreigners to understand, but if someone has any difficulty, please let me know.)