this is just a shape with a peace of it cut out so if we imagine how would this figure be before it was cut. it would give us an 4×12×6 cuboid (we can use that) so first, lets caculate the volume of the bigger cuboid6*12*4=288
THen we need to calculate the volume of the two smaller coupids
4*4*4=64
2*4*12=96
by subtracting the volume of the bigger coupid for our two smaller ones we will have the volume of the tree dimensional figure
65+96=160
288-160=128
