What is the surface area?

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°?

Factor the polynomial. b^2 + 4b + 4

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?