To find the moment of inertia of a body rotating about an axis, we need to know the mass distribution of the body. In this case, you mentioned that the body has a center of mass located at a distance of 25 cm from the axis of rotation.
However, you did not provide any information about the shape or dimensions of the body. The moment of inertia depends on the shape and mass distribution of the object, so without additional information, it is not possible to calculate the exact moment of inertia.
If you can provide more details about the shape or dimensions of the body, I can help you calculate the moment of inertia.