Question

in order for mark to get to work he needs to drive 10 miles south and 20 miles east. how many miles would he have to go if there was a road going southeast straight to his destinantion?

Answer 1

For this case what you can do is see the problem as a rectangle triangle where you must find the hypotenuse of it.
 Therefore we have that the distance traveled will be:
 d = root ((10) ^ 2 + (20) ^ 2)
 d = 22.36 miles.
 Answer:
 if there was a road going southeast straight to his destinantion he would do to go 22.36 miles.