A car travles 6km towards north at an angle of `45^(@)` to the east and then travles distance

A car travles 6km towards north at an angle of `45^(@)` to the east and then travles distance of 4km towards north at an angle of `135^(@)` to east (figure). How far is the point from the starting point? What angle does the straight line joining its initial and final position makes with the east? img src="d10lpgp6xz60nq..." width="80%"