Предмет: Геометрия, автор: bauuuka1

Дөңгелектің диаметрі 4 см.Оның ауданын табыңдар

Ответы

Автор ответа: baganaly
23

Ответ:

Объяснение:

Диаметр круга 4см. Найдите площадь.

Дано:

D=4см ,

Найти: площадь круга - Sкр -?

Площадь круга ,окружности находится по формуле

S=πR² , где R - радиус окружности, круга

Радиус круга R=D/2=4/2=2см

Площадь круга

Sкр=π×2²=4π см²

Примем число π как равное π=3,14 .

Приближенно площадь круга равна

Sкр=4π=4×3,14=12,56см²

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