Chase thought only 23 people would come to banquet but 48 showed up. What is percent error?

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Find the distance between the pair of points a(-1,8) and b(-8,4)