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

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.