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A box is constructed out of a folded sheet of cardboard. The box will be 12 inches wide, 9 inches long, and 10 inches high. What is the total surface area of the box?

Answer :

Finding the Total Surface Area of a Cuboid.

A cuboid made up of 3 pairs of surfaces, where each pair are same rectangles.

So,

Total Surface Area (TSA) of a Cuboid = (2 rectangles of dimension 12 inch x 9 inch) + (2 rectangles of dimension 10 inch x 9 inch) + (

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