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.
Key Terms: surface area, congruent, equilateral triangle, rectangular prism, trapezoid, triangular prism, composite 2-D figure, composite 3-D object, face, hexagon, hexagonal prism, net, octagon, pentagon. Prerequisite Skills: Estimate and determine the surface area of a right prism without using a formula.