Question

Please i need this asap!!

Answer 1

There are four triangular faces, so we do 4*1/2*8*8

There are four rectangular faces that have the dimension 8*13, so we do 4*8*13

There is one square face that has the dimension 8*8

So we do 8*8+4*1/2*8*8+4*8*13

Which is 608