3D shapes, volume

How can we find the volume of the following shapes?
Part 1:[br]Measure the volume of this cube, think about the following:[br][list][*]What tools do we need?[br]The following might be useful:[br][/*][/list][icon]/images/ggb/toolbar/mode_area.png[/icon][icon]/images/ggb/toolbar/mode_distance.png[/icon][icon]/images/ggb/toolbar/mode_volume.png[/icon][icon]/images/ggb/toolbar/mode_move.png[/icon][icon]/images/ggb/toolbar/mode_text.png[/icon][br][br][list][*]When might it be appropriate to use each of these tools? Discuss.[/*][/list][br][br]Part 2:[br]Have a look at this cuboid, what do you notice?[br]Can you calculate the volume? Check your answer using the volume tool.[br][br]Part 3:[br]Similar to what you noticed above, our shape is made up of different cubes.[br]Can you calculate the total volume of the shape with your group?[br][br]Part 4:[br]Similar to part 3, you need to calculate the volume, try independently this time.
Part 1:
Part 2:
Part 3:
Part 4:

Information: 3D shapes, volume