Question

find the area of the equilatral triangle whose perimeter is 24cm​

Answer 1

$perimeter \: of \: equilateral \: \triangle \\ = > \: 3a = 24cm \\ = > a = \frac{24}{3} = 8cm \\ then \: area \\ = \frac{ \sqrt{3} }{4} {a}^{2} \\ = \frac{ \sqrt{3} }{4} \times 8 \times 8cm {}^{2} \\ = 16 \sqrt{3} \: cm {}^{2} \\ = 27.7128cm {}^{2}$

Answer 2

therefore, the area of equilateral triangle is 27.68 cm².

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