найти периметр и площадь прямоугольника, если длина его 80 см, а ширина в 5 раз меньше. - №25948528

найти периметр и площадь прямоугольника, если длина его 80 см, а ширина в 5 раз меньше.
- Предмет:
  Математика
- Автор:
  sage92
- 5 лет назад

Ответы 1

a=80 см, тогда b=80:5=16 смP=80+80+16+16=192 смS=80*16=1280 см²
- Автор:
  fisherc6rv
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

Математика 5 класс. Решить значение у по формуле Y=8x+7, если x=0,1,25,100
- Предмет:
  Математика
- Автор:
  emiliatdic
- 5 лет назад
- Ответов:
  
  1
- Смотреть
От проступка один шаг - куда?
- Предмет:
  Обществознание
- Автор:
  thomas99
- 5 лет назад
- Ответов:
  
  2
- Смотреть
Какое предложение можно составить с словосочетанием "оберегаемый от сырости"
- Предмет:
  Русский язык
- Автор:
  jasminet5n7
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Выберите правильный вариант
1) last night irem's boyfriend ... the room while she was talking with another boy on the phone
a) was entering b) entered c) had entered
2) Can ... on the sofa when the baby started to cry
a) had slept b) slept c) was sleeping
3) World War 1 ... when World War 2 began
a) was already ending b) had already ended c) already ended
4) Ece ... the movie ' Da Vinci Code' at ten o'clock yesterday
a) watched b) was watcing c) had watched
5) The family last ... on a vacation in 2010
a) was going b) had gone c) went
6) The crowd ... after the mayor had made his speech
a) had cheered b) was cheering c) cheered
7) We ... a huge , beautiful house when i was a child
a) had b) were having c) had had
8) before the man ... this job a year ago , he had graduared from university in 1999
a) had found b) found c) was finding
9) The girl ... on her project while her mother was feding her baby sister
a) worked b) had worked c) was working
10) ... you at the meeting yesterday ? I didn't see you there
a) were b) did c) had been
11) by the time the police ... at the crime scene , the murderer ....
a) arrived/had already left b) had arrived/already left c) were arriving/already left
12) while i ... yesterday morning , i ... my friend lisa
a) was jogging/ was seeing b) jogged/saw c) was jogging/saw
13) Jane and Jim ... a baby soon after they ...
a) had/married b) had/had married c) had had/married
- Предмет:
  Английский язык
- Автор:
  middleton
- 5 лет назад
- Ответов:
  
  5
- Смотреть

How much to ban the user?

1 hour 1 day 100 years