A three-dimensional box is measured in cubic inches. A two dimensional square is measured in square inches. For a box, multiply length of the three sides in inches. For a square, muliply the two sides.
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To convert square inches to square yards, divide square inches by 1,296.
It isn't clear what exactly you want to calculate.
34 inches
Multiply 5 x 3 x2=30 inches. I don't agree, 5inX3inX2in=30 CUBIC inches and is the volume of the box. Square inches is a measure of area and the question is meaningless unless you are asking for the surface area of the box or a side of the box.
Yes because 1 foot = 12 inchesA square with an area of 1 square foot is 1 foot (long) by 1 foot (wide). Since a foot is 12 inches, the square area would be 12 inches long by 12 inches wide. If we filled the whole 12 inch by 12 inch box with little 1 inch by 1 inch boxes, we would have 144 little 1 square inch boxes.We can also multiple:12 inches x 12 inches = 144 inchesinches or 144 inches squared or 144 square inches.It does not have to be the shape of a square. if we arranged the 144 square inches in a box 6 inches by 24 inches (6 x 24 = 144) or a box 8 inches by 18 inches (8 x 18 = 144 or 2 inches by 72 inches (2 x 72 = 144) or even line of 1 inches by 144 inches (1 x 144 =144), they all are 144 square inches or 1 square foot. Even 1/2 inch by 288 inches or 1/4 inch by 576 inches has an area of 1 square foot.