Помогите с химией за 8 класс , пожалуйста)))

Найдите площадь кольца, ограниченного концентрическими окружностями, радиусы которых равны 41/√п и 37/√п

"Кубанский Третьяков", чье имя носит художественный музей

Найти лишнее слово в каждой строчке!

The most difficult thing for university student

Shaun Roger is opening of his classroom door.

Shaun can`t do this without help because he is

only six years old.He is the most youngest person

ever to study at Rochester University is New York.

Shaun began to reading at two, by the age of five

was regularly corresponding with university

professors and will be shortly complete his

first book. "I love the learning" says Shaun.

"My hero is the scientist Albert Einstein because

he has never combed his hair and wore socks"