Question

Деаметр окружности равен 10 (π≈3) A) Найдите длину окружности B) найдите площядь круга

Answer 1

Ответ:

А) 60

Б) 30

Пошаговое объяснение:

пж в лучший ответ

Answer 2

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 of the circle is given as 10.

A) Calculation of Circumference: The circumference of a circle can be calculated using the formula: C = π * d, where C is the circumference and d is the diameter of the circle.

Given that the diameter of the circle is 10, we can substitute this value into the formula to find the circumference:

C = π * 10

To calculate the value of π, we can use the approximation π ≈ 3.

C = 3 * 10 = 30

Therefore, the circumference of the circle is 30.

B) Calculation of Area: The area of a circle can be calculated using the formula: A = π * r^2, where A is the area and r is the radius of the circle.

Since the diameter is given, we can find the radius by dividing the diameter by 2:

r = d/2 = 10/2 = 5

Now, we can substitute the value of the radius into the formula to find the area:

A = π * 5^2

A = 3 * 25 = 75

Therefore, the area of the circle is 75.

To summarize: - The circumference of the circle is 30. - The area of the circle is 75.

Please note that the values of π and the formulas used are approximations and may not be exact.