Someone to help ? german

What is the circumference of the longitude of a unique shape to the 45th power logged? 45 45

Teach some german. if anyone could teach me some german that would be great, i’m considering taking a german course and wanted to know some basics first. all is appreciated; )

What is the correct way to tell your grandfather to buy the book? question 27 options: kaufen sie das buch! kaufen du das buch! kaufst du das buch! kaufen das buch!