What is the merit of the Russian pioneers in the exploration of the Earth?

The sum of the lengths of all the edges of a rectangular parallelepiped is 80 cm, and its two dimensions are 10 cm and 4 cm. Find the third dimension.

Discovery: the strait between North America and Asia, the northwestern coast of North America, the Aleutian and Commander Islands. Found a way from the Arctic Ocean to the Pacific.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.