Question

Найдите длину окружности и площадь круга радиуса 8 см. Число п округлите до сотых.

Answer 1

Calculation of Circumference and Area of a Circle

To find the circumference and area of a circle with a radius of 8 cm, we can use the formulas:

Circumference of a Circle = 2πr Area of a Circle = πr^2

where π (pi) is a mathematical constant approximately equal to 3.14159.

Let's calculate the circumference and area:

Circumference: Circumference = 2πr = 2 * 3.14159 * 8 cm = 50.26544 cm

Area: Area = πr^2 = 3.14159 * (8 cm)^2 = 201.06176 cm^2

Rounding π to the hundredth decimal place, we get:

Circumference ≈ 50.27 cm Area ≈ 201.06 cm^2

Please note that the values of π and the calculations are approximate due to rounding.