ACT 2012 April(70G) Math Question 15 Explanation - ACT Helper

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2012 April(70G) Math Question 15
Perimeter, Area, Volume
- Triangles, Squares, Rectangles, Circles
Choice C
$$\frac{(x+4)(2x+2)}{2}$$ $$=\frac{2x^{2}+2x+8x+8}{2}$$ $$x^{2}+5x+4$$
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