Have lot of problems from Moment of inertia. Pls help me to find a good book or give me the method of solving those.

1) Find the moment of inertia of a circular lamina of radius a about a tangent.
Ans: \frac{5Ma^2}{4}

2)Find the moment of inertia of a curve in the form of a recangle with sides 2a, 2b about an axis perpendicular to its plane at one corner.

Ans: \frac{2}{3}M(2a^2+ab+2b^2)

3) Find the moment of inertia of a solid cuboid with edges of lengths l, m, n about one of the edges of length l.

Ans: \frac{1}{3}M(m^2+n^2)