In the formula for a cube's surface area, A = __ a^2, what is the missing coefficient?

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Multiple Choice

In the formula for a cube's surface area, A = __ a^2, what is the missing coefficient?

Explanation:
The surface area of a cube is found by adding up the areas of all its six square faces. Each face has area a^2, so with six faces the total is 6 a^2. That’s why the missing coefficient is six. For example, if the side length is 2, each face is 4 square units, and six faces give 24 square units total. (The other numbers relate to different cube features—four is the number of sides on a single square face, eight is the number of vertices, twelve is the number of edges—but they don’t represent the total surface area.)

The surface area of a cube is found by adding up the areas of all its six square faces. Each face has area a^2, so with six faces the total is 6 a^2. That’s why the missing coefficient is six. For example, if the side length is 2, each face is 4 square units, and six faces give 24 square units total. (The other numbers relate to different cube features—four is the number of sides on a single square face, eight is the number of vertices, twelve is the number of edges—but they don’t represent the total surface area.)

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