Предмет: Математика, автор: данат4

В правильной треугольной пирамиде сторона основания равна 3 см высота пирамиды 4 см найдите объем пирамиды

Ответы

Автор ответа: Trover

V = 1/3*Sосн*H
Sосн = √3/4*a^2 = √3/4*9 = 9√3/4
V = 1/3*9√3/4*4 = 3√3

Автор ответа: данат4

Спасибо огромное

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Математика, автор: lili16kopets

плис помогите , СРОЧНОООО!!!!

5 лет назад

Предмет: Математика, автор: masterhalk543

яка площа великої кулі , якщо її радіус 4 см.

5 лет назад

Предмет: Английский язык, автор: sajferlena

Помогите пожалуйста даю 100 баллов! Пожалуйста можно правильно!!!

Once an Englishman went to Paris and stopped at a hotel. First of all he sent a telegram to his wife and
told her the address of the hotel. Then he decided to see the city. He left the hotel and walked along the
street. He passed several blocks then turned to the right and walked along another street. At the corner
he crossed the street and turned to the left. He liked Paris very much. In every street there was
something interesting. He saw a lot of ancient buildings, cathedrals, monuments. He walked a long way,
crossed many streets and turned many corners. When it was evening he decided to go back and only now
he realized that he lost his way. He didn't remember the name of his hotel. He tried to remember the way
back but could not. He didn't know what to do. It was already late and he was very tired. The
Englishman went into the first hotel be saw and took a room there. Before going to bed be sent another
telegram to his wife. The telegram said: "Send me my Paris address!
1. Choose the correct title for the tent.
a) A new dress.
b) A Bad Day.
c) New Address.
d) At the post office.
Choose the correct answer to the questions:
2) Where did an Englishman stop!
a) In a motel
b) In a hostel.
c) In a hotel.
3) What was there in every street?
a) Something interesting.
b) Nothing interesting.
c) Many places of interest.
4) Where did the Englishman go?
a) To the first restaurant
b) To the first hotel
c) To the post office
5.What did the Englishman send to his wife?
a) His new Paris address
b)A nice new dress
c) A telegram

Writing

Task 1 Complete the sentences with much, many and a lot of:
1.There are too___people in this library.
2. I can't go for a walk. I've got too___work to do.
3.How___ milk does you need?
4.He is so happy, he won___money yesterday.
5.How___ students are there in your class?

Task 2.
Answer the questions
Our neighborhood
1.Write what are the popular places in your neighborhood?
2.Write one or two ways local town councils can improve the local community.

5 лет назад

Предмет: Алгебра, автор: zmeyblackcobra

запишите формулу для подсчёта числа перестановок. Приведите пример задач
в которой нужно подсчитать число перестановок

9 лет назад

Предмет: Математика, автор: rifat79

На уроке физкультуры ученики выстроились в линейку на расстоянии 1 метр друг от друга.Вся линейка растянулась на 25 метров.Сколько было учеников?Помогите написать решение!!!!Спасибо!!

9 лет назад