I need help with this problem. With the remote learning I am having a hard time understanding the problem.

Please find

A) the mass of the solid and

B) the center of mass

A solid in the first octant is bounded by the planes y = 0 and z = 0 and by the surfaces z = 4 - x2 and x = y2 (see the accompany- ing figure). Its density function is 8(x, y, z) = kry, k a constant. 4 7=4-12 ray V 2 (2, VZ, 0)