Предмет: Математика, автор: Sali1986

Ширина прямоугольника
Равна 4 дм а длина в 2 раза больши ширины .найди площадь прямоугольника


Oksana1569: помогите пж https://znanija.com/task/37305673

Ответы

Автор ответа: Аноним
0

Ответ:

24

Пошаговое объяснение:

Пусть x - площадь, тогда составляем уравнение по формуле P=2(a+b). Подставляем вместо P - x, а вместо a - 4. Зная, что длина в 2 раза больше ширины, получаем

x=2(4+2*4) => x=2(4+8) => x= 24


Аноним: Можно как лучший?
Автор ответа: alisa201199
0

Ответ:

32

Пошаговое объяснение:

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1.   You (to go) to the library tomorrow? - No, I already
(to be) to the library this week. I (to be)
there on Monday. As a rule, I (to go) to the library every Wednesday. But yesterday I (not to go) there, because I (not to read) the book. I (to
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2.   As soon as I (to receive) a letter, I shall go to Moscow.

3.  Yesterday I (to put) five apples into the vase.
Where they (to be) now? - I (to eat) them.


4.  You ever (to be) to the Hermitage?

5.   What Nick (to do) when you (to ring) him up
yesterday? - He (to play) the piano.


6.  He (to tell) me he already (to write) his
composition.


7.  Why she (to sleep) now? It is too early. She never
(to sleep) at this time.


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If you (to come) after 7, he (to
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10. Pete (to go) to the cinema? - Yes. I (to think)
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12. He (to read) a book at 5
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13. Yesterday the children (to do) all their
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when she (to come), they (to play) with the cat.