A 45-45-90 triangle has a hypotenuse of 20 units. The area o...

Question Analysis
This problem tests the ability to find the area of a 45-45-90 triangle given the hypotenuse.

Key Concept Explanation
The area of a 45-45-90 triangle can be calculated using the formula for the area of a right triangle, .

Step-by-step Solution
1. Identify the hypotenuse: 20 units.
2. Use the formula for the leg: