At that time it was called 'The Land of Yan and Zhao', because its northern area was dominated by the Kingdom of Yan, while its southern area was occupied by the Kingdom of Zhao. Today, that same area is home to more than 50 minority ethnic groups, such as Han, Hui, Manchu, Mongolian and Korean.
Pentagonal Prism Formula 1  : Area of Base(A) = Â½ * a * 5 * s Perimeter of Base(P) = 5s Surface Area of Prism = 5as + 5sh = 5as + Ph Volume of Prism = (5/2)ash = Ah. 2  a = apothem length, s = side, h = height.
The Area of a Pentagon Formula is, Where, s is the side of the pentagon. a is the apothem length. Area of a Pentagon is the amount of space occupied by the pentagon. Pentagon is defined as a polygon which has 5 sides that are equal. The 5 angles present in the pentagon are also equal. A pentagon can be sectored into 5 similar triangles. The measurement of each interior angle in a regular pentagon 108 degrees.