It has 4 faces
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There is no way to find perimeter from a 3D figure. However, you can find the perimeter of a side of a triangular prism by using perimeter formulas for a parallelogram or triangle.
im 101% sure that the answer is a cuboid im a mathmetishion and i know my stuff real well. i hope this helps you with any homework given to you and in the meantime farewell.
tetrahedron is a 4 faced 3d shape.
Area is usually pertaining to the area of a 2d object but surface is 3d object
d2 = a2 + b2 + c2 a, b, and c are dimensional distances which are perpendicular (like x, y, and z coordinate system) and d is the distance between 2 points separated by those dimensions (or a diagonal line between the 2 points).