(Solved): The figure shows a composite slab with dimensions d1=11.4cm,d22.78cm, and d3=13.0 ...

The figure shows a composite slab with dimensions $d_1=11.4\mathrm{cm},d_2?2.78\mathrm{cm}$, and $d_3=13.0\mathrm{cm}$. Half the slab consists of aluminum (density $?2.70\mathrm{g}/{\mathrm{cm}}^3$ ) and half consists of iron (density $?7.85\mathrm{g}/{\mathrm{cm}}^3$ ). What are (a) the xcoordinate, (b) the y coordinate, and (c) the $z$ coordinate of the slab's center of mass? (a) Number Units (b) Number Units