Найдите радиус окружности ,описанной вокруг прямоугольного треугольника,вершины которого имеют координаты(10;9),(6;3),(15;-3).

Выполните вычисления и сделайте проверку двумя способами: перестановкой чисел; делением.

1) 15*18         2) 4*204

Помогите плизз прошу!!!!!!!!!!!!!!!!!!!!!!!!!!!

complete the text. use:

use: friday, homework, english, heart , learn, do, questions, into,timetable.

Look at our timetable. We have got Enqlish on monday Wednesday and ...  in enqlish lessons we ... new words translate from russian .... english ask and answer a lot of .... sing songs and learn poems by ... I enjoy learning .... but i don't like to ... homework. On Fridays theere is no ....  i like English on Friday.