Помогите решить Найти диагональ равнобедренной трапеции ,если большее её основание 15см, боковая сторона 7см, а больший угол 120 градусов.

Помогите пожалуйста!!! Раскрыть скобки, употребляя глаголы в нужном времени (Все дествия совершались в прошлом) When David was at school, he( to be) very close friend with Peter. They ( to be) at shool together for about nine years. Then Davids parents ( to move) to Paris. Although they ( to write) very often to each other, David and Peter gradually ( to drift) apart. Many years late Peter ( to get) married. As he and his wife ( to save) up some money, they ( to decide) to spend their honeymoon in italy. While they ( to tour) the country, they ( to decide) to stop at a small hotel. One day Peter ( to descover) that his old friend David ( to be) in the next room. David also ( to get) married and he and his wife9 to spend0 their honeymoon in Italy at that time, too.

Ответьте на вопрос Are you strong?

Какие бывают естественные тела,искусственные тела.

Перевести на английский.Сэму девять лет.