Shiny walks 7 km towards West and takes a left turn and walks 4 km. She then takes another left turn to cover 4 km, and after covering it, she walks 2 km towards South. She then finally walks 3 km towards East. How far is she from the starting point?

Jayesh starts from point A and drives 6 km towards south. He then takes a left turn and drives 3 km. He then takes a right turn and drives 2 km to reach a point B. Tania starts from point X, which is 5 km east of point A, and drives 8 km towards north. She then takes a left turn and drives 5 km to reach a point Y. What is the shortest distance between point Y and point A? (All turns are 90° turns only.)

A person travels 6 meters towards the North from a point, then turns East and travels 8 meters before stopping. How far is he from his starting point?