I need help with the first

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1