Solution of task 6.2.10 from the collection of Kepe OE

Solution of task 6.2.10 from the collection of Kepe OE

6.2.10
From a homogeneous plate in the form of a triangle OAB with base OB = 60 cm and height OA = 45 cm, a semicircle of radius r = 20 cm is cut out. Determine the coordinate xc of the remaining part of the triangle in cm. (Answer 20)