Given the figure below shows a regular hexagon, answer the following questions. Find the measures of the following angles. Show all work and provide all calculations:

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Find the quotient. 50a2 – 98b2 -5a +7b

Ten times the square of a non-zero number is eqaul to ninety times the number