Question

o.
A person walks 30 km towards north and walked 40km east.
How far is he from the starting point?​

Answer 1

Answer:

Step-by-step explanation:

Hi !

I always prefer making a diagram for all such questions based on direction sense.

Here you go:

The starting point here is A, then the path is A -> B -> C -> D (end point).

Now as depicted in the question, AB = 10km, BC = 6km and CD = 3 km.

By geometry, AC = AB - BC = 10 - 6 = 4 km.

Now, AD is the hypotenuse of the right triangle ACD.

Hence, AD² = DC² + AC²

OR AD² = 30² +40²

OR AD² = 2500

Taking square roots,

AD = 1250

km.