Предмет: Математика, автор: SpringBoonie

кто поможет сделаю лучшим

Приложения:

Ответы

Автор ответа: mskelrtron
0

Ответ:

32%

12×25=300(площадь)

12+10%=13.2

25+20%=30

13.2×30=396(площадь)

300+32%=396

ответ:32%


SpringBoonie: спс
mskelrtron: агась, мне и правду недостает "Лучший ответ"
Автор ответа: AvA22022
0

Ответ:

см

Пошаговое объяснение:

сначала найдем площадь исходного прямоугольника

25*12=300 см кв

далее увеличиваем стороны. ширина 12*1.20 =14,4 см

длина 25*1.1=27.5 см

найдем новую площадь 27,5* 14.4 =396 см кв

396 - 300=96 см кв это разница в площадях старой и новой

96/300*100% =32%


SpringBoonie: спс
AvA22022: пж
Похожие вопросы
Предмет: Английский язык, автор: Рубик2000
Complete the sentences with the new words from exercise 5 in the appropriate forms. впишите слова из упражнение 5
article earn general private push quality sell type to print to publish to type слова.
1)in this shop they ...and buy works of art. 2)All these magazines to ...by one company.3) do you ...your private letters or do you write them by hand?4) I've enjoyed this chocolate cake, though in ...i don't really like sweet things. 5)the ...of education in this school is fairly high.6) i have never travelled in a ...plane in my whole life . 7)Mr Pelkey ...enough money for his family to live comfortably. 8)He ...the first door on the right and found himself in the living room. 9)The wilsons ...their house and moved to another part of the country. I'm afraid i don't know their new address. точки вставить слово снизу вставил слова, кое что не вставил запутался, нужна помощь
in this shop they sell and buy works of art. All these magazines to published by one company. do you earn your private letters or do you write them by hand? I've enjoyed this chocolate cake, though in i don't really like sweet things. the general of education in this school is fairly high. i have never travelled in a private plane in my whole life . Mr Pelkey earn enough money for his family to live comfortably. He push the first door on the right and found himself in the living room. The wilsons sell their house and moved to another part of the country. I'm afraid i don't know their new address.
Предмет: Английский язык, автор: TheShell