A person walks 4 km north, then 3 km east. How far is he from the starting point?
Show answer & explanation
Correct answer: A
Explanation

Correct answer: 5 kilometers
Distance2 = (perpendicular)2 + (base)2
Distance2 = (4)2 + (3)2
Distance2 = 16 + 9
Distance2 = 25
Distance = 25
= 5 kilometers
Therefore, the person is 5 kilometers from his starting point.