\"\"

\

The radius of the sphere is \"\".

\

Find the surface area of the sphere.

\

The surface area of the sphere is \"\".

\

\"\"              (Substitute \"\")

\

\"\"        (Algebraic formula: \"\")

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\"\".

\

Therefore, the surface area of the sphere is \"\".

\

\"\"

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The surface area of the sphere is \"\".