1. The problem statement, all variables and given/known data Find the volume of an object bounded by x2 + y2 ≤ 1, x2 + z2 ≤ 1 and y2 + z2 ≤ 1. 2. Relevant equations 3. The attempt at a solution This stuff is very new to me (multiple integrals to find volume) so I am not entirely familiar with it. My first thought was to put each boundary condition in terms of one variable. For example, solve the first 2 boundary conditions for y and z in terms of x, but then if you substitute them in to the third boundary condition, it doesn't really get you anywhere. Any help would be much appreciated. Thank you.