The answer is (A).
The following two triangles show how the Pythagorean theorem applies.
Another way to find this distance is to use a formula, which you could say is just the Pythagorean
theorem taken to another dimension. If the length is ℓ, the width is w, and the height is h, the
formula is
DISTANCE BETWEEN OPPOSITE VERTICES OF A RECTANGULAR SOLID
UNIFORM SOLIDS
A rectangular solid is one type of uniform solid. A uniform solid is what you get when you take a
plane and move it, without tilting it, through space. Here are some uniform solids.