почему большие полушария мозга человека закрывают все остальные отделения мозга?

On Tuesday I get up at half past six. I go to the bathroom and wash my hands and face and clean my teeth. Then I dress, go to the kitchen and cook breakfast for my family. At half past seven my son gets up and has breakfast. I have breakfast with my son. My son eats a sandwich and drinks a cup of tea. I don't drink tea. I drink coffee. After Breakfast my son leaves home for school. I don't leave home with my son. On Tuesday I don't work in the morning. I work in the afternoon. In the evening I am at home. My husband and my son areat home, too. We rest in the evening. My son watches TV, my husband reads newspapers and I do some work about the house. At about eleven o'clock we go to bed. ___ нужно этот текст в прошедшем времени,помогите пожалуйста..

При сгорание 6 л (н.у.) ацетилена в 200 л (н.у.) воздуха образовалось ______л (н.у.) углекислого газа. (Запишите число с точностью до целых)

Две стороны треугольника равны 6 см и 7 см а угол между ними равен 60 градусов. Найдите третью сторону треугольника.