What is the surface area of a cube with a side length of 7.5 inches?

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Multiple Choice

What is the surface area of a cube with a side length of 7.5 inches?

Explanation:
The surface area of a cube comes from its six equal square faces. Each face has area equal to side length squared. For a side length of 7.5 inches, one face is 7.5 × 7.5 = 56.25 square inches. There are six faces, so the total surface area is 6 × 56.25 = 337.5 square inches. This matches the formula S = 6a^2, giving 337.5 square inches.

The surface area of a cube comes from its six equal square faces. Each face has area equal to side length squared. For a side length of 7.5 inches, one face is 7.5 × 7.5 = 56.25 square inches. There are six faces, so the total surface area is 6 × 56.25 = 337.5 square inches. This matches the formula S = 6a^2, giving 337.5 square inches.

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