A rectangular prism has a length of 3, a width of 4, and a height of 15. What is the distance between two opposite corners of the prism?
We can use the 3-D Pythagorean analog
The distance, D = sqrt ( 3^2 + 4^2 + 15^2) = sqrt (250) = 5sqrt (10) units ≈ 15.8 units