The user has provided an image with several geometry problems related to pyramids. I need to extract the problems and their associated diagrams, and present them in a structured format. I will focus on problems 8 through 12 as they are clearly delineated.

Задача 8

Дано:

• \[ AB = 2\sqrt{3} \]
• \[ \angle MDO = 60^{\circ} \]

Найти: Объем пирамиды (V)

Чертеж:

Задача 9

Дано:

• \[ DC = 2\sqrt{6} \]
• \[ \angle (DC, (ABC)) = 45^{\circ} \]

Найти: Объем пирамиды (V)

Чертеж:

Задача 10

Дано:

• \[ \angle (DC, (ABC)) = 30^{\circ} \]
• \[ DO = 2\sqrt{3} \]

Найти: Объем пирамиды (V)

Чертеж:

Задача 11

Дано:

• \[ \angle ADB = \angle BDC = \angle ADC = 90^{\circ} \]
• \[ AD = 2\sqrt{3} \]

Найти: Объем пирамиды (V)

Чертеж:

Задача 12

Дано:

• \[ AB = 3\sqrt{2} \]
• \[ \angle ADB = 60^{\circ} \]

Найти: Объем пирамиды (V)

Чертеж: