We know that scale factor=1/4 so volume of the smaller pyramid=[scale factor]³*volume original pyramid volume original pyramid=192 unit³ volume of the smaller pyramid=[1/4]³*192---> (1/64)*192----> 3 units ³
The associative property is used for both of these. (1.6*2)*5 can also be 1.6*(2*5) and it would still give you the same exact answer. Same goes for (27*2.5)*4. I hope that helps!
