Algebra-1

Question Analysis
This question tests the student's ability to apply the Pythagorean theorem to find the length of a diagonal in a square and recognize that the result is an irrational number.

Key Concept Explanation
The length of the diagonal in a square with side length is given by the formula . For a square with side length 5 units, the diagonal is units. Since is irrational, is also irrational.

Step-by-step Solution
1. The question asks for the length of the diagonal in a square with side length 5 units.
2. Use the Pythagorean theorem:

Click "Show Answer" to reveal the answer and analysis