You have a piece of paper. Size of the paper is 10cm by 10cm.
Area of the paper = 100cm^2.
For some reason, you need a square piece of paper with an area of 50cm^2.
Using the paper you have, what's an easy way of getting the new square?
To see the Answer- select the area below from mouse:
Fold the four corners of the square into the centre. This doubles the thickness of the paper, and so halves the area.
