Find the area of the semicircle. Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answer as a decimal

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°?

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.