Answer:
111.8 yards
Step-by-step explanation:
So by walking diagonally across the field, Patrick is making a right triangle with his path (the two legs are the width and length of the field). Let a = 50, b = 100, and c = the distance Patrick walks.
For a right triangle, we use the Pythagorean Theorem: a² + b² = c²
Since you're finding c, we can rearrange (using algebra) to get: 
Fill in the values for a and b:
= 111.8 yards.
V= 1/3bh use this to help. or provide a picture
319049
as 100,042 + 98,117 + 120,890 = 319,049