Geometry

Question Analysis:  
This question involves directly applying the Pythagorean Theorem to find the hypotenuse when both legs are given.  
The main focus is on correctly calculating the hypotenuse using the theorem.  

Key Concept Explanation:  
The Pythagorean Theorem states:  
 
where and are the legs, and is the hypotenuse.  

Step-by-Step Solution:  
1. Identify given values:  
  -  
  -  
  - (unknown hypotenuse)  
2. Apply the Pythagorean Theorem: