Does anybody know the answer ? // PLEASE ANSWER
[[ provide details if needed!! ]]

Answer:
720 [tex]in^{2}[/tex]
Step-by-step explanation:
area = length x width
length = 3 x 6 inch boxes
width = 4 x 10 inch boxes
18 x 40 = 720 [tex]inches^{2}[/tex]