<image>If the ABCD shape is a combination of a rectangle and a semi-circle, the perimeter of the ABCD shape is 70, the BCFGH shape is a rectangle where an equilateral triangle has been removed from one side of it, the area of the BCFGH shape is 108, the CFIJ shape is a combination of a rectangle and a semi-circle, the length of the FI side is 6 and the area of the CFIJ shape is 90, compute the length of the AB side of the ABCD shape. Assume $\pi=3.14$. Round computations to 2 decimal places.