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Mathematics 11 Online
OpenStudy (anonymous):

The surface area of a sphere is found using the formula 2003-02-03-00-00_files/i0130000.jpg, where r is the radius of the sphere. The surface area of a cube that is the same height and width (2r) as the sphere is 2003-02-03-00-00_files/i0130001.jpg. What is the ratio of the surface area of the sphere to the surface area of the cube?

OpenStudy (anonymous):

there is no formula?

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