Байарыст 2018-1 №4 вариант 15

Bayarystanov AO 2018-1 work №4 options 13
The tops of the pyramid A((5;2;4); B(-3;8;-7); C(1;-5;7); D(9;3;6) is given. It is necessary to find: a) | AB |; b) BC; BD; c) S ABC; d) V ABCD.

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