The shape, a cube and a square based pyramid. Both shapes have the same base and the same height. Which expression represents the total volume of this shape? justify your answer.

Question

Note:that the pyramid is on top of the cube joined together.

Answer 1

volume of cube = base x height
volume of pyramid = (1/3)base x height

total volume = base x height + (1/3)base x height
= (4/3)base x height

Answer 2

thanks.