Предмет: Геометрия, автор: 12221121

В круг вписан прямоугольник со сторонами 3м и 4м. Найти длину окружности и площадь круга.

Ответы

Автор ответа: belka1952

Прямоугольник вписан в круг, значит его диагональ равна диаметру описанного круга.Диагональ находим по т. Пифагора , она равна 5, значит радиус =2,5

Длина окружн.=2pR=5p

Площадь круга=PR в квадрате, Sкруга=6,25p

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quite – достаточно
also - также
elder – старший
younger – младший
both – оба

2. Вставьте в обычные пропуски нужную форму глагола to be (am, is, are), а в подчеркнутые - нужные формы притяжательных местоимений (my, your, his, her, our, their).
Пример: My name is Sandra Lomb.
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a play – пьеса
in common – общий
helping others – помощь другим
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