Can someone please help me with these three questions? Really would appreciate it

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

In a column proof the right column states your reasons

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i