Arectangular prism is 3 meters long, 4 meters wide, and has a total surface area of 94 square meters. what is its height?

3 m
4 m
5 m
6 m

Which one ? is the answer and how to find this answer

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Need plz been trying to do it for a long time and still haven’t succeeded