в треугольнике длины двух сторон равны 5 и 6 см угол между ними равен 120градусов найдите длину третьей стороны

Одна из диагоналей параллелограмма является его высотой и равна 9 см.Найти надо стороны параллелограмма,если площадь 108 см. в кв.

Можно подробно пожалуйста))

Раскройте скобки, употребляя глаголы в Past Simple.

1. What your neighbours (to do) yesterday? 2. Mr Smith (to fix) his car yesterday morning. 3. His wife (to water) her lovely flowers. 4. Their children (to clean) the yard and then they (to play) basketball. 5. In the evening their boys (to listen) toloud music and (to watch) TV. 6. Their little girl (to cry) a little and then (to smile). 7. Her brothers (to shout) at her. 8. Mrs Smith (to work) in the kitchen. 9. She (to bake) a delicious apple pie. 10. She (to cook) a nice dinner. 11. She (to wash) the dishes and (to look) very tired. 12. The children (to brush) their teeth, (to yawn) a little and (to go) to bed. 13. Their mother (to change) her clothes and (to brush) her hair. Then she (to talk) on the phone. 14. Her husband (to smoke) a cigarette and (to talk) to his wife. 15. They (to wait) for the bus. The bus (to arrive) at 9 o'clock. 16. They (to visit) their friends. 17. They (to dance) a lot there. 18. Mr and Mrs Smith (to rest) very well last night. They really (to have) awonderful time with their friends. 19. Mr Smith (to fix) his car yesterday morning? Mrs Smith (to water) her lovely flowers? Their children (to clean) the yard? They (to play) basketball? When their boys (to watch) TV? Who (to bake) a delicious lemon pie? Mrs Smith (to cook) a good dinner? The children (to go) to bed? Why MrSmith and Mrs Smith (to have) a wonderful time last night? Where they (to be)?