Предмет: Математика, автор: gringeloool

ширина прямокутника 40см, що становит 8/9 від його довжини. знайди периметр прямокутника

Ответы

Автор ответа: iryna04

1

Ответ:

a=40 см

$b = 40 \div \frac{8}{9} = 40 \times \frac{9}{8} = 45$

b=45 см

P=(a+b)2=(40+45)•2=170 (см)

Відповідь: 170 см.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: cherepaninaanastasia

LIVING THE HIGH LIFE
Have you ever dreamed of living in a top-floor flat? There are several pros and cons to think about before moving to a sky-high residence.
One scientifically proven advantage is that the top floor is warmer in winter. Heat rises, so if you're in a cold climate you'll probably pay less for the heating bills. Just turn down the thermostat and let the downstairs neighbours keep you warm. Also the higher up you live, the brighter it is, so apart from 1 letting in the sunlight will help warm your flat and keep the heating bills even lower. Of course, an advantage in winter can become a disadvantage in summertime. Your place may feel like an oven, while those living on lower floors are feeling cool.
But there is another advantage. If you're looking for peace and quiet, a top-floor flat may be the best choice. At least 2 stomping around over your head, or early risers falling out of bed at 5 am. The downside of this is that you have to be careful not to make much noise yourself. You'd be surprised what your downstairs neighbours can hear, 3 hoovering the floors at a time when your neighbours may still be sound asleep.or
from break-ins. Most burglars are looking for a quick way One more plus of living high up is the fact that you are safer in and out and 4 Living higher up can protect you from other dangers as well. For example, floods - which can definitely affect lower floors and sometimes cause extensive it will probably be more difficult for you to escape, and rescuers may have a harder time getting to you damage - will never reach your place. On the other hand,
There is one more thing to consider before deciding to live
in a top-floor apartment. People who suffer from a fear of heights might not want to live too high up. You may think you'll get used to it, but there is some evidence that people who live in places tend to suffer more from anxiety than those on the lower floors. And what's the point of havin a great view if you're unable to look out of your windows because of your nervousness?

1 год назад

Предмет: Физика, автор: tokafinik

Яка маса нафти повністю згоріла, якщо при цьому виділилось 88 МДж?

1 год назад

Предмет: Химия, автор: m72817168

Задание на фото( ниже) Даю 100 балов.

1 год назад

Предмет: Русский язык, автор: Аноним

Определите значение слова КОНЕЧНО

7 лет назад

Предмет: Алгебра, автор: iarinakaran

Что является художественной деталью рассказе «Хамелеон»?

7 лет назад