One circle is tangent to the inside of another circle as shown. Two diameters of the larger circle pass behind the smaller circle, and the exposed sections of the lines measure 40, 60, 70 and 55 respectively.
What is the area of the shaded region?
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One circle is tangent to the inside of another circle as shown. Two diameters of the larger circle pass behind the smaller circle, and the exposed sections of the lines measure 40, 60, 70 and 55 respectively.
What is the area of the shaded region?