Предмет: Геометрия, автор: Heterometrus

Знайдіть площу рівностороннього трикутника, вписаного в коло, якщо периметр квадрата, описаного навколо цього кола, дорівнює 64 см.

Ответы

Автор ответа: Аноним
0
Сторона квадрата равна 64:4=16см
Радиус окружности равен 16:2=8см
Сторона треугольника равна a=R√3=8√3см
S=1/2a²sin60=1/2*192*√3/2=48√3см²
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Математика, автор: eldarshiradze34
2. Вычислите значение функции y = -3х3 при х = —
—2:
А. -24;
В. 18;
С. 24;
D. -18.​
7 лет назад
Предмет: Английский язык, автор: cactys25
Grammar.1
Choose the correct form of verbs. Выберите правильную форму глагола.
11.She was wet. She _________ in the rain.

had walked
were walking
had been walking
12.Stan __________ a postman for forty years when he retired.
has been worked
had been worked
had been working
13.Grandma ________ to the supermarket before they got home from school.

went
had gone
was going
14.They ________ football all day, so they were tired in the evening.

played
playing
had been playing
15.Pete left work as soon as he _______ the reports.

has finishing
had finished
had finish
16.The waitress didn't serve us that we ______ .

did not order
was not ordering
had ordered
17.The girls ______ TV when their mum came home.

have been watching
had been watching
had been watched
18.Tony _______ the computer games, while his sister was listening to music.

was playing
was played
had played
19.The secretary _______ all the letters by the time her boss came to work.

had sent
had been sending
was sending
20.Edward _______ of Bigfoot before he went to Wyoming.

had never heard
had never been hearing
was never hearing
7 лет назад
Предмет: Биология, автор: kurnovser
Срочно можно ответ пожалуйста​
7 лет назад
Предмет: География, автор: пандаа22
Минимальное количество солнечной радиации получит город:
1. Владивосток
2. Хабаровск
3. Москва
4. Норильск
10 лет назад
Предмет: Химия, автор: 3Екатерина3

Написать уравнения реакции,где кислород является окислителем.
10 лет назад