Assignment:
Use a triple integral to find the volume of the given solids.
1.) The tetrahedron bounded by the coordinate planes and the plane 2x + 3y + 6z = 12
2.) The solid enclosed by the parabolas z = x^2 + y^2 and z= 0 and x + z = 1
Provide complete and step by step solution for the question and show calculations and use formulas.