Question 1067279
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pierre folded a square piece of paper vertically to make two rectangles. each rectangled had a perimeter of 39 inches. 
how long is each side of the original square? what is the area of the original square? what is the area of one of the rectangles?
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Let "x" be the half of the size of the original square piece of paper.

Then the perimeter of the rectangle (after the paper folding) is 

2x + x + 2x + x = 39 inches,

6x = 39 inches,

x = {{{39/6}}} = 6.5 inches.

Then the size of the original square piece of paper is 2x = 2*6.5 = 13 invhes.

The area of the original square is {{{13^2}}} = 169 square inches.

The are of the rectangle is the half of it, i.e. {{{169/2}}} = 84.5 square inches.
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