Mathematics, 30.07.2021 23:30 Kitkatuu

Find the surface area of a tetrahedron whose vertices are at the points A( 1, 2, -1 ) , B( 2, 0, 1 ) , C( -1, 1, 2 ) and D( 3, 2, 4 ).

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Find the surface area of a tetrahedron whose vertices are at the points A( 1, 2, -1 ) , B( 2, 0, 1 )...

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