SOLUTION: A rectangular sheet of paper measure 12" by 9". One corner is folded onto the diagonally opposite corner and the paper is creased. What is the length in inches of the crease?

Question 1044589: A rectangular sheet of paper measure 12" by 9". One corner is folded onto the diagonally opposite corner and the paper is creased. What is the length in inches of the crease?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Hi there,
Consider that in folding you have
created a right angled triangle
with a side of 12" and a side of
9".
Using Pythagoras Theorem.
12^2 + 9^2 = crease^2
144 + 81 = crease^2
crease size = √225
crease size = 15"
Hope this helps. :-)
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