Answer:
7.071 cm
Explanation:
A cube always has the same length on all sides, and if the diagonal is trying to be found, then using the Pythagorean Theorem would lead to sides a and b to be 5. Since the Pythagorean Theorem is (a² + b² = c²), and c is the diagonal line, and a and b are the lines that equal 5 cm, then the problem would look like this: (25 + 25 = c²) | (50 = c²) | (7.071 = c, or c = 7.071) Hope this helps! Have a great day! :)