To do in this project aims to study the relations of the difference of the squares or rectangular Prism volume n. Vertical folding vertically and horizontally. When n is an integer from 3 to 10 were studied using A4 size paper folded vertically and horizontally as a Prism base triangle to decagon have cover, and calculate the volume of a rectangular Prism, various. With the value of the fold in two As follows:
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