The formula is simply Area = Length X Width as long as you are working with square, rectangular, or parallegram figures. (Triangular Area is Length X Width / 2.0) Gets a bit more complicated when working with shapes with curved sides. Note that all measurements must be in the same units. Makes no sense, for example to multiply length in feet by width in inches.

Your particular case is 4"X 96" = 384 sq in, or alternately 8' X (4/12)' = 32/12 = 2.67 sq ft. If you need to convert sq ft to sq in, simply multiply sq ft by 144 to get sq in or divide sq in by 144 to get sq ft.

Your particular case is 4"X 96" = 384 sq in, or alternately 8' X (4/12)' = 32/12 = 2.67 sq ft. If you need to convert sq ft to sq in, simply multiply sq ft by 144 to get sq in or divide sq in by 144 to get sq ft.

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