area of an box is length x width.
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Area = Length * Breadth.
To calculate the area of a rectangle :- Measure the length. Measure the width. Multiply the length by the width - the product is the area. EXAMPLE : length = 7 inches, width = 3 inches, Area = 7 x 3 = 21 square inches.
180 square foot
Area = 35*10 = 350 square cm
The formula for the area of the square is length multiplied by width.