The interior angle of a n sided regular polygon is `48^(@)` more than the interior angle of a regular hexagon. Find n.

The sum of all interior angles of a regular hexagon is ……….

Each interior angle of a regular plygon is 144^(@) . Find the interior angle of a regular polygon which has double the number of sides as the first polygon.

Each interior angle of a regular polygon is 160^(@) . Find the interior angle of another regular polygon whose number of sides is two-thirds the number of sides of the given polygon.

Each interior angle of a regular polygon is 140^(@) . The number sides is :

Each interior angle of a regular polygon is 18^(@) more than eight times an exterior angle. The number of sides of the polygon is