Chu vi của một tam giác là 16cm, độ dài một cạnh tam giác là 6cm. Tích độ dài hai cạnh còn lại của tam giác trong trường hợp tam giác có diện tích lớn nhất là:  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Read the passage below and choose one correct answer for each question:

           We had the marathon today. A dozen of us sped off. People stood on the streets, cheering us on. It was like we were in the Olympics. Peter was ahead of me. So was Owen. Then I shot off. I was racing ahead. My legs were going faster than the rest of me. I sped off onto the main road and kept running past other runners until there was only Peter left in front of me. On and on, I ran. My legs and lungs were hurting but I couldn't stop. Just outside the town, I ran past Peter. A minute later, I was declared the winner of the marathon. Everyone cheered and clapped. It was hot. I was perspiring. I could hardly breathe but it didn't matter. I felt like a hero.

   

  1. How many students took part in the marathon?
  A. There were many students.                  B. There were a few.
  C. There were ten.                                    D. There were twelve.

  2. At first the writer ran ___________.
  A. very fast
  B. very slowly
  C. as quickly as his friend, Peter
  D. more slowly than his friends, Peter and Owen

  3. After a long distance of running, he felt _________ .
  A. very strong              B. very tired                  C. very excited                D. happy
  
  4. He ran past over Peter _______________ .
  A. after some minutes
  B. outside of the town
  C. inside the town
  D. after a minute

  5. He was declared _________________.
  A. the hero of the marathon
  B. the winner of the marathon
  C. the strongest of the marathon
  D. the healthy man of the marathon

   

   

   

• Find a mistake in the four underlined parts of the sentence and correct it:

  My father was thinking of buy a new computer for me.

• Find a mistake in the four underlined parts of the sentence and correct it:

  This scientific theory has now been proved be false.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Having achieved highest score, our team was rewarded the first prize.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Having achieved highest score, our team was rewarded the first prize.

• Find a mistake in the four underlined parts of the sentence and correct it:

  When I kept to get unwanted calls, I had my phone number changed.

• Choose the best answer for the following sentence:

  Up to now I have never forgot the most embarrassing experience ________________ .

   

   

• Choose the best answer for the following sentence:

  _______________________ when I began to learn English.

   

• Choose the best answer for the following sentence:

  _______________________ I would not have overcome my mispronunciation.

   

   

• Choose a word that has different stress pattern:

  inadequate            embarrassment                dispirited             entertainment