Overlapping area of 2 circles (II)

Overlapping area of 2 circles (II)

Postby Guest » Sat Sep 02, 2017 1:49 am

Inside a circle E with radius 2 units , there are 2 circles A and B
both with radius 1 unit . A touches E at a point and keep fixed ,
while B rolls randomly along the circumference of E .
Find the expectation of the overlapping area of A and B .

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