What's new

staircase posts

Peter’s staircase Brainteaser

by David, 5 September 2018 | 0 comments

Brain icon

Peter’s just finished building a new staircase up to the attic. It just fits along the four-metre-long wall of his lounge room, and it’s three metres tall. It has exactly 15 steps. Peter wants to have a carpet running along the staircase. How long does it need to be?

Continue reading Peter’s staircase

Categories: