How would I say 24 x 12 in Spanish

when you are going to explain a procedure,   the first thing to do is to name the parts or the apparatus you are going to describe in terms of how it or they function. also it is important to know who is going to operate it and the abilities this man/woman requires to manage it.

need points ,necesito puntos

in english pick the right answer. charlie explains that you know, in south america.