Respuesta :
To find the area of the paper. You must multiply the width and the height, which is 9 and 19.
9 x 19 is 171
And multiply that by 4
171 x 4 = 684
Total area is 684
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