Problem 5
The tablet shows a truncated square based pyramid that contains two spheres.
Let the large sphere be S1 with a radius of r1 and the small sphere be S2 with a radius of r2.
The spheres touch each other and touch the internal faces of the pyramid.
Let the side of the upper square on the pyramid be length a and the side of the larger side of the square base of the pyramid be length b. So b>a.
Find r2 in terms of a and b.
