в правильной четырехугольной пирамиде sabcd точка o — центр основания, s вершина sb = 60 bd=72. найдите длину отрезка so 

Some of my think i have a boring daily, but l like it. i usually (1) at about 6:00 or 6:30 in the morning, after my alarm clock wakes me up. First, i brush my teeth, and shave, and wash my face. Then i (2) and go downstairs to (3) breakfast with my family. i always have coffee, cereal, and lots of fruit. That's me in picture with my wife. i (4) to work because i don't like to drive, and i always (5) at my office before 8:00 i'm never late for work. Five o'clock is my favorite time of the day because i finish work and (6) and see my wife and two children again. We eat dinner together in our dining room at around 6:00, and after that i (7) with my wife and kids at home. We really (8) watching our favorite tv programs together, but two or three times a week i (9) in the evening, so i can stay strong and healthy. This is very important! Finally, at about 9:30, i (10), read for a while, and then (11). Sure, some people think my daily routine is a little boring - but on weekends and holidays i live to (12) airplanes for fun! слова для вставки arrive do exercise enjoy fall asleep fly get dressed get up go to bed go home hang out have take a bus