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an equilateral triangle has a height of 12 cm, according to this information, identify the area of the triangle

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Answer to a math question an equilateral triangle has a height of 12 cm, according to this information, identify the area of the triangle

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Eliseo
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102 Answers
- Dada a altura \( h = 12 \) cm.

- A fórmula da altura em termos do lado \( a \) é \( h = \frac{\sqrt{3}}{2} a \).

- Reorganizando para encontrar \( a \):

a = \frac{2h}{\sqrt{3}} = \frac{2 \times 12}{\sqrt{3}} = \frac{24 \sqrt{3}}{3} = 8 \sqrt{3}

- A fórmula da área de um triângulo equilátero \( A = \frac{\sqrt{3}}{4} a^2 \).

- Substituindo \( a = 8 \sqrt{3} \):

A = \frac{\sqrt{3}}{4} (8 \sqrt{3})^2 = \frac{\sqrt{3}}{4} \times 192 = 48 \sqrt{3} \text{ cm}^2

Resposta: 48 \sqrt{3} \text{ cm}^2

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