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If the diameter of the cross - section of a wire is decreased by 5%, by what percentage
should the length be increased so that the volume remains the same?
2. Surface areas of a sphere and cube are equal. Then find the ratio of their volumes.
If the diameter of the cross - section of a wire is decreased by 5%, by what percentage
should the length be increased so that the volume remains the same?
2. Surface areas of a sphere and cube are equal. Then find the ratio of their volumes.
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