Infinitive :
1. We went home to meet my other friends.
2. It is hard to do math.
3. What do you want to do in the future?
4. I would like to help you.
5. It is good to do sports.
6. My mum wants to clean my room.
7. She wants to go for a walk by muself.
8. I read in english to learn new words.
Gerund :
9. She enjoy going shopping by herself.
10. I am good at plaing tennis.
11. Doing tests is hard for me.
12. Mark loves drawing animals.
13. They couldnt go skiing this winter
14. Jake hates swimming in the sea.
15. Riding a house is really difficult
Объяснение:
пирамида abcd.
во-высота,
aпофема вх. высота падает на на точку пересечения высот.по теореме о трех перпендикулярах хво-это прямоугольный треугольник.
со=(1/3)l.
по т-е пифагора находишь bo
она равна кронеь из 8 умножить на l, разделить на 3