Предмет: Математика, автор: krocha03062002yslia

Вычислить площадь круга длина 1/4 окружности равна 10,2 дм .Решение через пи(3,14) . число пи и ответ округлить до целых

Ответы

Автор ответа: juliika2001

S кр = пR^2 С = 2пR =2x3 xR =6R 1/4C = 10.2дм C = 10.2x4=40.8дм

6R = 40.8

R = 5.1 дм S кр =2пх5,1^2 = 2х3х26,01= 156 дм2

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