Considering the volume of a spherical shell as an increment of volume of a sphere, find approximately the volume of a spherical shell whose outer diameter is 83 inches and whose thickness is 8 inches. (Use the visual below to clarify the idea of a "shell".) Round your answer to the nearest tenth of a cubic inch.

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What’s the volume of the sphere shown?

A trout lays eggs that are approximately spherical. The eggs have a diameter of about 3.5 millimeters. Estimate the volume of one egg. Round your answer to the nearest tenth of a cubic millimeter.