Here's the question you clicked on:
pythagoras123
When a rectangular sheet of paper with length 8 cm is folded exactly into half, the ratio of its length to its width remains unchanged. If the square of the width of the original piece of paper = X cm2, find the value of x.
Erratum \[x cm ^{2}\] not x cm2
|dw:1333973637329:dw| x/8 = 4/x
width will be your new length, and the half of original length will be your new width ... i guess