How do find the slope of more than one point when you have to estimate to graph the points

A25-inch wide drum is used in a marching band. what area does the top of the drum cover? round to the nearest hundredth. (use 3.14 for pi.)

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up