Movements

1. Aman walks 3 km north.
2. He then walks 4 km east.

Question

What is the shortest distance from Aman to his starting point?

Answer

5 km.

Solution

1. The movements form a right triangle with sides 3 km and 4 km.
2. The 3-4-5 right-triangle set gives a shortest distance of 5 km.