SOLUTION: Mary walks 4 miles north and then turns and walks 5 miles west. How far is she from her original starting point?

Algebra ->  Pythagorean-theorem -> SOLUTION: Mary walks 4 miles north and then turns and walks 5 miles west. How far is she from her original starting point?      Log On


   

Question 406056: Mary walks 4 miles north and then turns and walks 5 miles west. How far is she from her original starting point?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
That's a right triangle with sides of 4 and 5.
c%5E2+=+4%5E2+%2B+5%5E2+=+41
c+=+sqrt%2841%29
c =~ 6.403 miles