Предмет: Математика, автор: leylass2011

Найдите площадь полной поверхности прямоугольного параллелепи педа с измерениями 5 дм, 7 см и 9 дм. А) 286 см² В) 292 см² С) 316 см² Д) 324 см²

Ответы

Автор ответа: ludmilaksenija2005

1

Ответ:

А) 286 см²

Пошаговое объяснение:

а=5 cм

b=7 см

с=9 см

S=2ab+2ac+2bc=2•5•7+2•5•9+2•7•9=

=70+90+126=286 см²

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: miroglovegor1

написати текст про вечірку на англійській мові по зразку

зразок:I was at my best friend's birthday party
last month. Her name's Isabella and
the party was at her house on 12th May,
from 6p.m. to 9 p.m. it was a really big
party. All her friends and family were
there, and we were so excited about it.
There was lots of food-pizza, salad and,
of course, cake! It was all really nice.
Isabella was nervous before the party,
but she was fine when everyone was
there. It was a really brilliant evening!

1 год назад

Предмет: Английский язык, автор: Аноним

Помогите дам 70 баллов 3. Complete the conversations. Write should or shouldn't in each space. 1. A: My friends failed their exams. What should they do? B: They study more. 2. A: Should I take this medicine? B: No, you 3. A: I want to make some new friends. Should I join a club? B: Yes, you 4. A: I've got a cold. B: You put on a jumper. 5. A: Should my brother buy a fast car? B: He . They are very expensive. 6. A: There's a party tonight. What B: What about your new dress? 7. A: I want to get fit. Should I do more exercise? B: Yes, you 8. A: My leg hurts. Should I enter the race? B: No, you I wear?

1 год назад

Предмет: Математика, автор: alishpak

Сколько будет (1+1)° ?

1 год назад

Предмет: Английский язык, автор: kema121302

Both experts _____ already ____:

1.has left
2.have left
3.are leaving

6 лет назад

Предмет: Алгебра, автор: temirt60

Если a+y=-6, ay=3.5,то чему равно a³+y³
A)-216
B)-153
C)153
D)216

6 лет назад