Asked by Anonymous

A square sheet of paper has area 15cm^2. The front side is white and the back side is black. A corner of the sheet is lifted and placed so that the crease is at a 45degree angle. If the fold is such that the visible black area is equal to the visible white area, how many centimeters long is the crease? Express your answer in simplest radical form.

Answers

Answered by Not sure
sqrt{40?}
Answered by SOMEBODY
@ Not sure, I think you forgot to divide by 2 for the area of the triangle.

The correct answer is 2\sqrt{5}
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