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A cube is a three-dimensional object composed of six squares at right angles to each other. To calculate the area of a square, you multiply the length of one side by 2. To calculate the area of a cube, you take the area of a square and multiply it by 6. Thus, the formula for the cube area is 6 times the length of one side squared.
Measure the length of one side. In this example, the length is 5 inches.
Multiply that side by itself to get its square. In this case, 5 x 5 is 25.
Multiply the result by 6 to get the area of the cube. In this case, 25 * 6 equals 150 square inches.
eHow Article: How to Calculate the Area of a Cube
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