Question

Диаметр окружности равен 8 см (π»3). a)  Найдите длину окружности. б)  Найдите площадь круга.        Помогите срочно!!!!!! ​

Answer 1

Ответ:

Д-8 см

П-3

Д*П=8*3=24

Ответ: Площадь круга 24 см

Answer 2

Ответ: см фото.

Пошаговое объяснение:

Answer 3

Calculation of Circumference and Area of a Circle

To find the circumference and area of a circle, we need to know the diameter of the circle. In this case, the diameter is given as 8 cm.

a) Calculation of Circumference

The circumference of a circle can be calculated using the formula:

Circumference = π * Diameter

Given that the diameter is 8 cm, we can substitute this value into the formula:

Circumference = π * 8 cm

To calculate the circumference, we need to know the value of π. The value of π is approximately 3.14159.

Circumference = 3.14159 * 8 cm

Calculating this, we find:

Circumference = 25.13272 cm

Therefore, the length of the circumference of the circle is approximately 25.13272 cm.

b) Calculation of Area

The area of a circle can be calculated using the formula:

Area = π * (Radius)^2

Given that the diameter is 8 cm, we can calculate the radius by dividing the diameter by 2:

Radius = Diameter / 2

Radius = 8 cm / 2

Radius = 4 cm

Substituting the value of the radius into the formula, we get:

Area = 3.14159 * (4 cm)^2

Calculating this, we find:

Area = 3.14159 * 16 cm^2

Area = 50.26544 cm^2

Therefore, the area of the circle is approximately 50.26544 cm^2.

I hope this helps! Let me know if you have any further questions.