How long is the diagonal of a 12 mm-by-16 mm face of a rectangular prism?

Answer 1

To find the diagonal of a rectangular face, you can use the Pythagorean theorem. For a rectangle with sides of 12 mm and 16 mm, the diagonal ( d ) is calculated as ( d = \sqrt{12^2 + 16^2} = \sqrt{144 + 256} = \sqrt{400} = 20 ) mm. Thus, the diagonal of the 12 mm-by-16 mm face is 20 mm long.