Байарыст 2018-1 №4 вариант 13

Bayarystanov AO 2018-1 work №4 options 13
The tops of the pyramid A(–4;–7;–3); B(0;–5;7); C( 2;3;8); D(9;–2;1)is given. It is necessary to find: a) | AB |; b) BC; BD; c) S ABC; d) V ABCD.

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