With Good Prospects - Team A

Sarah found some cubic boxes (edge length: 40 cm) and imagines a staircaise out of boxes on the outside of the house to get to its roof - creating a lookout!!

How many cubes would be needed?[br][br]Sarah hasn't counted the boxes yet but there are definetly more than 10 but less than 20. [br]Would that be enough?

Could be a close call. Yes definetly. By far too few. Unfortunately a couple would be missing.

Cube staircase with 3 steps

Estimate: How many cubes are needed to build a staircase with 6 steps?

How many steps would a staircase made with 30 cubes have?

Information: With Good Prospects - Team A