Question

Как найти площадь круга, если длина окружности равна 314 м.

Answer 1

Длина окружности по формуле
L = πD = 314 м , π = 3,14
Отсюда диаметр круга
D = L/π = 314 : 3,14 = 100 м.
Площадь круга по формуле
S = πD²/4 = 2500π м² ~ 7850 м² - ОТВЕТ

Answer 2

Finding the Area of a Circle with a Given Circumference

To find the area of a circle when the circumference is given, you can use the following formula:

Area = (Circumference)^2 / (4 * π)

Where: - Circumference is the length of the circle - π (pi) is a mathematical constant approximately equal to 3.14

Calculation

Using the given circumference of 314 m, we can calculate the area of the circle as follows:

Area = (314)^2 / (4 * 3.14)

Area ≈ 314^2 / 12.56

Area ≈ 9856 / 12.56

Area ≈ 785.03 square meters

Therefore, the area of the circle with a circumference of 314 m is approximately 785.03 square meters.