What number could be a common denominator for 1/5 and 5/6?

6
5
11
30

What is a possible solutions of the x> 3?

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

What is the volume of a cone with a height of 6 cm in the radius of 2 cm