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The length of each side of an equilatera...

The length of each side of an equilateral triangle will be doubled to create a second triangle. The area of the second triangle will be how many times the area of the original triangle?

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To solve the problem, we need to find the area of both the original equilateral triangle and the new triangle formed by doubling the side lengths. ### Step 1: Area of the Original Triangle The formula for the area \( A \) of an equilateral triangle with side length \( a \) is given by: \[ A = \frac{\sqrt{3}}{4} a^2 \] For the original triangle (Triangle 1), the side length is \( A \). \[ A_1 = \frac{\sqrt{3}}{4} A^2 \] ### Step 2: Area of the New Triangle Now, for the new triangle (Triangle 2), the side length is doubled, so the new side length is \( 2A \). We will use the same area formula for the new triangle: \[ A_2 = \frac{\sqrt{3}}{4} (2A)^2 \] Calculating \( (2A)^2 \): \[ (2A)^2 = 4A^2 \] Now substituting this back into the area formula: \[ A_2 = \frac{\sqrt{3}}{4} \cdot 4A^2 \] This simplifies to: \[ A_2 = \sqrt{3} A^2 \] ### Step 3: Finding the Ratio of the Areas Now, we need to find how many times the area of the second triangle is compared to the first triangle. We will calculate the ratio \( \frac{A_2}{A_1} \): \[ \frac{A_2}{A_1} = \frac{\sqrt{3} A^2}{\frac{\sqrt{3}}{4} A^2} \] The \( A^2 \) terms cancel out: \[ \frac{A_2}{A_1} = \frac{\sqrt{3}}{\frac{\sqrt{3}}{4}} = \frac{\sqrt{3} \cdot 4}{\sqrt{3}} = 4 \] ### Conclusion The area of the second triangle (Triangle 2) is 4 times the area of the original triangle (Triangle 1). ### Final Answer The area of the second triangle will be **4 times** the area of the original triangle.
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