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What is the volume of the rectangular prism?
A rectangular prism has a length if 10.4 mm, a width of 5 mm, and a height of 8 mm.

The formula for the volume of a rectangular prism is:

V = lwh

where V is the volume, l is the length, w is the width, and h is the height.

Substituting the given values into the formula, we get:

V = 10.4 mm x 5 mm x 8 mm

V = 416 mm³

Therefore, the volume of the rectangular prism is 416 cubic millimeters.