The diagram shows solid pyramid ABCDE.
The base BCDE of the pyramid is a horizontal square w side lengths 12cm
The vertex A of the pyramid is vertically above the midpoint of BD
The volume of the pyramid is 768cm3
Calculate the size of the angle between AB and the base of the pyramid.
![The diagram shows solid pyramid ABCDE The base BCDE of the pyramid is a horizontal square w side lengths 12cm The vertex A of the pyramid is vertically above th class=](https://us-static.z-dn.net/files/d0d/ae503844fe2f0d3d9f7ba6d3d8b02b0b.png)