діаметр кола з центром у точці О лорівнює 8 см . Чому дорівнює відрізок ОА?

Do research on the internet about a university of your choice
See "Tips for doing internet research" in "Learning
strategies". Find out:
the university's name and location
the courses that are taught there
the degrees you can get
its structure: departments, faculties, etc
the facilities available: laboratories, research centres,
libraries, computer centres, etc
the university's history
the number of students, professors, tutors
the projects the university is part of
the quality of the education, the university rating
in Russia or worldwide
any famous alumni

Помогите!!Решите уровнение (y-1,8):8=0,7  Зарание спасибо!