Предмет: Математика, автор: elina2699

Длина окружности цветочной клумбы,имеющей форму круга,равна 18,84 м.Вычислите площадь цветочной клумбы.

Ответы

Автор ответа: troleg

Длина окружности вычисляется по формуле L = 2 * π * R.

В данном случае

R = L / (2 * π) ≈ 18,84 / 6,28 = 3 м.

Тогда площадь клумбы S = π * R² ≈ 3,14 * 3² = 28,26 м².

Автор ответа: Ирасик

Находим радиус окружности из формлы длины окружности.

l=2πr

r=l/2π = 18,84/2*3,14 = 3 (м)

Находим площадь круга по формуле.

S=πr²

S=3,14*3²=28,26 (м²)

Ответ. 28,26 м²

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