If a person who walks 40 meters south, then walks 40 meters north, then how many meters has this person actually walked? Where is this person's location?

一个人向南走40米，又向北走40米，那么此人实际走了多少米？他的位置是在哪里？

youdao

If a person who walks 40 meters south, then walks 40 meters north, then how many meters has this person actually walked? Where is this person's location?

一个人向南走40米，又向北走40米，那么此人实际走了多少米？他的位置是在哪里？

youdao