David leaves the house to go to school. He walks 200 meters west and 125 meters north. How far is he from his starting point? Round to the nearest whole meter.
This is just a right triangle problem where the legs are 200 m and 125 m
The distance from his starting point is the hypoyenuse =
√ [ 200^2 + 125^2 ] = √55625 ≈ 236 m