Andrew has a job to tile a room 13 ft x 16 ft with 1 ft. square tiles. how many tiles does he need?

Need on this geometry question. explain how you did it.

Math question.. plz me .. best answer all

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.