Ascience fair poster is a rectangle 48 inches long 24 inches wide what is the area of the poster in square feet?

The answer asks for the units in square feet, and you are given inches, so you first need to convert your units to feet. There are 12 inches in a foot, so instead of 48 in x 24 in, this is 4 ft x 2 ft. (Divide each number by 12 in/ft.)

The final area is length x width, or 4 ft x 2 ft = 8 ft squared.

The area for a rectange formula is l*w so it would be,
48*24 which equals 1152