A corner was trimmed from a square sheet of paper to make the shape shown. Dimensions are in centemeters. a. What was the length of each side of the square paper before the corner was trimmed? b. Find the perimeter of this figure. c. Find the area of this figure

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a. You still have an uncut side, which is 20 cm. b. The perimeter is 2 uncut sides (20+20) added to the cut sides (12+14). That is 66. c. You just cut off a triangle from a square. The square is 20*20=400. The triangle is [latex]\frac{(20-12)(20-14)}{2}=\frac{8*6}{2}=24[/latex]. The final area is 400-24=376.

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