A cylindrical vessel of height 9 cm and radius 7 cm is completely filled with sand. When this sand is poured out it forms a right circular cone of radius 10 cm what will be the height of this cone?
Aryan is facing west. He turns right and walks 20 m, then he turns left and walks 10 m. From there he walks 7 m to the north and then 10 m towards the west. In which direction is he from his original position?