what is the answer? is it 5?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is not true about kl and mn? what is mn? (show )

Francis is getting new carpet tiles in his living room and den. his living room and den are connected. he needs to figure out how much carpet he needs and the cost involved. if each tile costs $2.00 per sq ft, how much would it cost to have new tile put in the den? a) $24 b) $36 c) $48 d) $54 plz awnser soon