Question

что является радиусом окружности?

Answer 1

Ра́диус (лат. radius — спица колеса, луч) — отрезок, соединяющий центр окружности (или сферы) с любой точкой, лежащей на окружности (или поверхности сферы), а также длина этого отрезка. Радиус составляет половину диаметра.

Answer 2

Проще говоря, это если взять и соедегить прямой линией через центр окружности одну сторону и другую, то получится диаметр. ну. будет похоже на две одинаковые половинки. а радиус - это половина диаметра

Answer 3

The Radius of a Circle

The radius of a circle is a fundamental geometric concept that refers to the distance from the center of the circle to any point on its circumference. It is denoted by the letter "r" and is typically measured in units of length, such as centimeters or inches.

The radius is an essential component of a circle and plays a crucial role in various calculations and formulas related to circles, such as calculating the circumference, area, and diameter.

The radius of a circle is defined as the distance from the center to any point on its circumference.

Relationship with Diameter

The radius and diameter of a circle are closely related. The diameter is defined as the distance across the circle, passing through the center and connecting two points on the circumference. It is twice the length of the radius.

Mathematically, the relationship between the radius (r) and the diameter (d) of a circle can be expressed as:

d = 2r

This means that the diameter is always twice the length of the radius.

Calculation and Measurement

The radius of a circle can be calculated or measured using various methods, depending on the available information.

If the diameter of the circle is known, the radius can be obtained by dividing the diameter by 2:

r = d/2

Conversely, if the circumference of the circle is known, the radius can be found using the formula:

r = C/2π

Where C represents the circumference and π (pi) is a mathematical constant approximately equal to 3.14159.

Additionally, the radius can be measured directly using a ruler or other measuring instruments by determining the distance from the center of the circle to any point on its circumference.

Conclusion

In summary, the radius of a circle is the distance from its center to any point on its circumference. It is a fundamental geometric concept and is closely related to the diameter of the circle. The radius can be calculated or measured using various formulas and methods, depending on the available information