Mathematics, 01.09.2019 19:20 svandewalle

Apyramid composed of four equilateral triangles, called a tetrahedron, has a one-side length of 5 meters. what is its surface area? round the answer to the nearest tenth.

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Apyramid composed of four equilateral triangles, called a tetrahedron, has a one-side length of 5 me...