Байарыст 2018-1 №4 вариант 11

Bayarystanov A.O. 2018-1 work №4 option 11
Pyramidany tөbeleri A(3;–5;–2); B(–4;2;–3); C( 1 ;5;7 ); D(–8;4;9) berilgen. Taboo kerek: a)|AB|; b) BC; BD; c) S ABC ; d) V ABCD.

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