A sector of circle of radius $15\ cm$ has the angle $120^{o}$. It is rolled up so that two bounding radii are joined together to form a cone. The height of the cone is
Reveal answer
Fill a bubble to check yourself
A sector of circle of radius $15\ cm$ has the angle $120^{o}$. It is rolled up so that two bounding radii are joined together to form a cone. The height of the cone is