Question

Построй окружность с центром в точке О и радиусом 4см . проведи ее радиус ОА и диаметр ВС .Чему равна их длина? Сделай записи.

Answer 1

Я надеюсь что то тут видно.

Answer 2

Building a Circle and Calculating Lengths

To build a circle with a center at point O and a radius of 4 cm, we can follow these steps:

1. Building the Circle: - Use a compass to draw a circle with a radius of 4 cm centered at point O.

2. Drawing Radius OA and Diameter BC: - Draw a line from point O to point A to create radius OA. - Draw a line from point B to point C to create diameter BC.

3. Calculating Lengths: - The length of radius OA is 4 cm. - The length of diameter BC is 8 cm (twice the length of the radius).

Length Calculation

The length of radius OA is 4 cm and the length of diameter BC is 8 cm.

This information is based on the geometry of circles and the given radius. The length of the radius is the same as the given radius, and the length of the diameter is twice the length of the radius.

Let me know if there's anything else you'd like to know!