Предмет: Геометрия, автор: bpan142rus

срочнооо Периметр прямоугольника равен 26см а одна из его сторон 9см. Найдите сторону квадрата имеющего такую же площадь как этот прямоугольник.

Ответы

Автор ответа: mrAkimid

P прямоугольника = 26 см, одна из сторон 9 см.
По свойству параллелограмма, вторая сторона также равняется 9 см.
26-9-9=8 см – две оставшиеся стороны.
8/2=4 – вторая сторона прямоугольника.
S прямоугольника = 9*4=36 см² = S квадрата.
Сторона квадрата равняется √36 = 4 см.
Ответ: сторона квадрата – 4 см.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Guyug234

1 In our team, w1. In our team, we play … well. *
Quite
Enough
Rather
2. I haven't got … flour to make this cake. *
Quite
Enough
Rather
3. I found the water … cold this afternoon at the swimming pool. *
Quite
Enough
Rather
4. I've got … money to buy this dress. *
Quite
Rather
Enough
5. His new job is well-paid, but … noisy with all those machines. *
Quite
Enough
Rather
6. This exercise was … easy, wasn't it? *
Quite
Enough
Rather
7. That box is … big. I can't pick it up. *
Very
Too
8. I want … work early tonight. *
To finish
Finishing
9. Sam is really good at … . *
To climb
Climbing
10. He refused … me. *
To help
Helping
11. I enjoy … to the music while cooking. *
To listen
Listening
12. There is a lot of work … . *
To do
Doing
13. I can’t stand … the washing-up. *
To do
Doing
14. He can’t help … so loudly. *
To talk
Talking
15. Jody doesn`t like wearing … . *
Poison
Pocket
Make up
16. Use safety plugs to protect yourself from an electric … . *
Shock
Make up
Pocket
17. I love science fiction films because of the … effects. *
Crazy
Special
Gentle
18. Sam doesn`t hang out with a big group of kids, only a few … friends. *
Next
Close
Near
19. He buys his clothes with his … money. *
Disposable
Poison
Pocket
20. They are ____ - you can’t tell them apart. *
identical twins
close friends
friendly cousins
21. Is she making … cookies? *
many
a little
22. - Are there … peaches?- Yes, but not … . *
Some/many
Any/many
Some/much
23. Mark is very busy. He doesn't have … free time. *
some
any
many
24. This year I got very … presents for my birthday. It's sad! *
few
little
25. We've got … time to finish this job. *
a little
a few
26. My sister is staying in Rome for … weeks. *
a few
a little
27. I’ve got … work this week. *
A lot of
Many
28. They ... a few minutes ago. *
left
have left
29. … Sandra … yet? *
Did … call
Has … called
30. Look! Someone … their handbag in the room. *
left
has left
31. Sandra … her bike yesterday. *
fell off
has fallen off
32. ... to the United States? *
Did you ever gone
Have you ever been
33. What time … to bed last time? *
did you go
have you gone
34. Where’s Alan? … him? *
Have you seen
Did you see
35. I … finish my geography project. *
Have to
Must
36. All employees … be on time for work. *
Must
Have to
37. You … carry a first aid kit with you in case of an emergency. *
Have to
Must
38. You … buy a sleeping bag. You can use mine. *
Mustn’t
Don’t have to
39. Campers … play loud music late at night. It’s forbidden. *
Mustn’t
Don’t have to
40. I … do the washing by hands because the washing machine is out of order. *
Have to
Muste play … well

6 лет назад

Предмет: Русский язык, автор: elizaveta34537

"Автор пишет о [чём-то] как о [чём-то]", - здесь нужна запятая перед "как"?

6 лет назад

Предмет: Литература, автор: viktorivanov2402

СРОЧНО ПОМОГИТЕ ПЖ ПЖ ПЖ ПЖ!

Сказка "Снежная королева!1

6 лет назад

Предмет: Геометрия, автор: 1231е43435

первый угол треугольника на 30градуусов меньше второго и на 30градусов больше третьего является ли этот треугольник прямоугольным?

9 лет назад

Предмет: Литература, автор: gangsterfarshik

Надо дать характеристику Петру или Эвелине к сказке Слепой музыкант Короленко!!!

9 лет назад