Байарыст 2018-1 №4 вариант 8

Bayarystanov A.O. 2018-1 work #4 option 8
The vertices of the pyramid are A(7;5;8); B(–4;–5;3); C( 2 ;–3;9 ); Given D(6;1;4). It is necessary to find: a)|AB|; b) BC; BD; c) S ABC; d) V ABCD.

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