Question

A science fair poster is a rectangle 48 inches long and 36 inches wide what is the area of the poster in square feet/10335939/1ffd9207?utm_source=registration

Answer 1

48 inches is 4 feet.
36 inches is 3 feet.

The question is asking for the area in square feet of a rectangle that is 4 feet long by 3 feet wide. That area is the product of these dimensions:
  (4 ft)×(3 ft) = 12 ft²