Well since I do not know the unit of measure, I can not give you the answer in a unit of measure but it would be the same answer just add the unit for example meter at the end of the answer and square it.
The answer is:
232.048
Answer:
12 meters
Step-by-step explanation:
You have to use the inverse of the pythagorean theorem to do this so you do square root of (20x20-16x16) which is 12
1025ft above Sea Level is John
25ft below Sea Level is his Brother
1025ft + 25ft = 1050ft
Thats the difference in altitude
This is what I got I dont know if It should be an equation but that's all i can get to, gl