В пря­мо­уголь­ном па­рал­ле­ле­пи­пе­де ABCDA1B1C1D1
из­вест­ны длины рёбер: AB=44 AD=33 AA1=35
Най­ди­те пло­щадь се­че­ния, про­хо­дя­ще­го через вер­ши­ны C ,C1 ,A
МОЖНО С РИСУНКОМ​
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