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A piece of art is in the shape of an equilateral triangle with 7 in. Find the area of the piece of art. Round to the nearest tenth

Respuesta :

triangles
7in = 1 side length.
An equilateral triangle's area can be found with the formula: A=√3/4(x^2), when "x" equals the side length.
The area of the triangle is √3/4(7^2), which equals 21.22, rounded is 21.2 inches.
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