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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=