Thiết diện qua trục của một hình nón là một tam giác vuông cân có diện tích bằng . Diện tích xung quanh của hình nón là ?  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the correct sentence which is built from the words and phrases given:

  Smoke / cars / emit / identify / by 46%.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  method                      together                         both                      month

• Choose the correct sentence which is built from the words and phrases given:

  20% of the smoke / come/ burning garbage.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  locate                      area                       state                    place

• Choose the correct sentence which is built from the words and phrases given:

  sum up / cars / take the main responsibility / air pollution.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  suburb                     learn                      liberty                        birthday

• Choose the word that has the underlined part pronounced differently from the rest:

  found                     southern                    tough                     rough

• Choose a word that has different stress pattern:

  population                       information                     metropolitan                      enlightening

• Choose the correct sentence which is built from the words and phrases given:

  The second proportion of the graph / gas / identify / 28%.
  
  

• Choose a word that has different stress pattern:

  nation                      empire                      monitor                     rename