The total area of Erica's banner should be considered as the 684 inches.
Calculation of the total area:
Since erica makes a banner using 4 sheets of paper. Each paper measures 9 inches by 19 inches.
So here the total area be
= (4) (9) (19)
= 684 inches
hence, The total area of Erica's banner should be considered as the 684 inches.
Learn more about an area here: https://brainly.com/question/1879236