РЕШЕНИЕ:

V ABCDA₁B₁C₁D₁ = S1осн∙h

V ABCB₁ =1/3 ∙ S2осн∙h = 1/3 ∙ (S1осн/2)∙h = 1/6 S1осн∙h = 1/6 V ABCDA₁B₁C₁D₁

V ABCB₁ =12 : 6 = 2

Ответ: 2

РЕШЕНИЕ:

V = abc

V ABCB₁ =1/3 Sосн ∙ с = 1/3 ∙ (½ ab)∙c = 1/6 abc = 1/6 V

V AD1CB₁ = V - 4 V ABCB₁ =V - 4/6 V = 2/6 V = 1/3 V

V AD1CB₁ = 1/3 V = 4,5 : 3 = 1,5

Ответ: 1,5

РЕШЕНИЕ:

V ABCDA₁B₁C₁D₁ = S1осн∙h

V ABDA₁ =1/3 ∙ S2осн∙h = 1/3 ∙ (S1осн/2)∙h = 1/6 S1осн∙h = 1/6 V ABCDA₁B₁C₁D₁

V ABDA₁ =9 : 6 = 1,5

Ответ: 1,5

РЕШЕНИЕ:

V ABCDA₁B₁C₁D₁ = S1осн∙h

V ABDA₁ =1/3 ∙ S2осн∙h = 1/3 ∙ (S1осн/2)∙h = 1/6 S1осн∙h = 1/6 V ABCDA₁B₁C₁D₁

V ABCDA₁B₁C₁D₁ =3 ∙ 6 = 18

Ответ: 18