This is the 16093rd most frequent Russian word.
развёрнута
"Развёрнута" means "expanded" or "unfolded."
In this sentence, 'развернуто' describes the detailed and comprehensive manner in which the teacher explained the subject.
Учитель развернуто объяснил тему урока.
The teacher explained the lesson topic in detail.
Here, 'развёрнутом' refers to the expanded and structured presentation of the report.
Доклад был представлен в развёрнутом формате.
The report was presented in an expanded format.
The use of 'развёрнуто' in this context signifies the intention to elaborate on an idea with more depth and detail.