# A pyramid has a base in the shape of a rhombus and a peak directly above the base's center. The pyramid's height is #9 #, its base's sides have lengths of #4 #, and its base has a corner with an angle of #(5 pi)/6 #. What is the pyramid's surface area?

##### 1 Answer

Oct 18, 2017

Total Surface Area

#### Explanation:

AB = BC = CD = DA = a = 4

Height OE = h = 9

OF = a/2 = 2

Area of

Lateral surface area

diagonal

Area of base ABCD

Total Surface Area