The surface area of a cylinder with radius $r$ and perpendicular height $3 r$ is given by $2 \pi\left(r^{2}+3 r^{2}\right)$. Simplify this expression, keeping $\pi$ in your answer.

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The Answer of The surface area of a cylinder with radius $r$ and perpendicular height $3 r$ is given by $2 \pi\left(r^{2}+3 r^{2}\right)$. Simplify this expression, keeping $\pi$ in your answer.

The Surface Area of a Cylinder with Radius rrr And Perpendicular Height

The Surface Area of a Cylinder with Radius $r$ And Perpendicular Height