how does this work?

tres · 9 Jun 2008 at 21:58

DampCat · 9 Jun 2008 at 21:59

It's using decimals, which are being rounded by 5x13.

Lummox · 9 Jun 2008 at 22:00

Can you really not see it?

davethe11 · 9 Jun 2008 at 22:00

4 x 9 = 42

BigglesPiP · 9 Jun 2008 at 22:00

It doesn't.

JIM_BOB7813 · 9 Jun 2008 at 22:00

obligatory: older than the internet
It doesn't work. The line between both hypotenuse has a small gap.

tres · 9 Jun 2008 at 22:00

Thank you!

yhack · 9 Jun 2008 at 22:01

I'm going to go with witchcraft.

JIM_BOB7813 · 9 Jun 2008 at 22:02

http://www.harmsy.freeuk.com/BTexp.html

Haiku · 9 Jun 2008 at 22:44

That used to be one of the tasks on The Crystal Maze. All they had to do was turn the square into the rectangle by rearranging the pieces. Amazing how many totally failed to work it out.