Ads galore makes posters with standard dimensions of 81/2 inches by 11 inches.
both length and width of the poster may vary 1/20% according to the ads galore's regulations.
what is the smallest acceptable area of one poster, rounded to the nearest thousandth of square inch?

Given:
poster standard dimension: 8 1/2 inches by 11 inches
length and width may vary 1/20 %

1/20 % convert in decimal form: 0.05% or 0.0005

Area = 8 1/2 inches * 11 inches = 93.5 sq. inches

Smallest acceptable area for one poster:

Width: 8.5 inches * (1 - 0.0005) = 8.49575
Length: 11 inches * (1 - 0.0005) = 10.9945

Area = 8.49575 * 10.9945 = 93.4065 or 93.407 sq. inches.