Find the measurement indicated.

Can any one me with the answers to these questions asap?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a