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.
Volume of any prism is area of its base multiplied by its height. As base is rhombus in shape and its area is half the product of its diagonals, if its diagonals are #a# and #b#, its area is #1/2ab#. Hence, if height of a prism with rhombus base is #h#, its volume would be #1/2abh#. Hence, volume of a prism with rhombus base is #1/2abh#, where #a# and #b# are diagonals of the rhombus and #h# is the height of prism.