Subjects geometry

Rectangle Perimeter 6D5Dbf

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1. **State the problem:** We need to find the perimeter of a rectangle with vertices at approximately $(-6,6)$, $(-3,9)$, $(3,1)$, and $(-2,-2)$. 2. **Recall the perimeter formula for a rectangle:** $$\text{Perimeter} = 2(\text{length} + \text{width})$$ 3. **Identify the length and width:** Since the vertices are given, we calculate the distances between adjacent vertices to find the sides. 4. **Calculate the distance between points:** Use the distance formula between two points $(x_1,y_1)$ and $(x_2,y_2)$: $$d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$$ 5. **Calculate side lengths:** - Side 1 between $(-6,6)$ and $(-3,9)$: $$d_1 = \sqrt{(-3 + 6)^2 + (9 - 6)^2} = \sqrt{3^2 + 3^2} = \sqrt{9 + 9} = \sqrt{18} = 3\sqrt{2}$$ - Side 2 between $(-3,9)$ and $(3,1)$: $$d_2 = \sqrt{(3 + 3)^2 + (1 - 9)^2} = \sqrt{6^2 + (-8)^2} = \sqrt{36 + 64} = \sqrt{100} = 10$$ - Side 3 between $(3,1)$ and $(-2,-2)$: $$d_3 = \sqrt{(-2 - 3)^2 + (-2 - 1)^2} = \sqrt{(-5)^2 + (-3)^2} = \sqrt{25 + 9} = \sqrt{34}$$ - Side 4 between $(-2,-2)$ and $(-6,6)$: $$d_4 = \sqrt{(-6 + 2)^2 + (6 + 2)^2} = \sqrt{(-4)^2 + 8^2} = \sqrt{16 + 64} = \sqrt{80} = 4\sqrt{5}$$ 6. **Check opposite sides for equality:** - $d_1 = 3\sqrt{2} \approx 4.24$ and $d_3 = \sqrt{34} \approx 5.83$ (not equal) - $d_2 = 10$ and $d_4 = 4\sqrt{5} \approx 8.94$ (not equal) This suggests the shape is not a perfect rectangle but a parallelogram or irregular quadrilateral. 7. **Assuming the problem intends the shape to be a rectangle, use the two pairs of closest equal sides:** - Length $= 10$ - Width $= 4.24$ 8. **Calculate the perimeter:** $$\text{Perimeter} = 2(10 + 4.24) = 2(14.24) = 28.48$$ **Final answer:** The perimeter of the rectangle is approximately $28.48$ units.