Sixteen boxes that are each 1 5/8 feet high are stacked. Find the height of the stack

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Adistribution has the five-number summary shown below. what is the third quartile, q3, of this distribution? 22, 34, 41, 55, 62

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?