What is a ball?
This article describes what isball. From here you will learn the definition of the word "ball", the formulas for computing the area of its surface and volume. Get all the necessary minimum information about the ball from the school course of geometry.
Everyone in geometry classes must learn a figure like a ball. About what the balloon, our article will tell.
A ball is a geometric body that is bounded by a surface, any points of which are located at the same distance from the center. This distance is called the radius of the ball.
A ball can be imagined as a semicircle rotating around its fixed diameter, which is called the axis of the ball. Both ends of the diameter are poles. The surface of a sphere is a sphere.
When the plane (secant) intersects the center of the ball, then such a section is called a large circle, all the other sections are small circles.
The surface area of the ball can be found by the formula:
- S = 4πr2, where r is the radius of the ball, and π = 3.14.
The volume of the ball is found by the formula:
- V = (4πr3) / 3, where r is the radius of the ball, and π = 3.14.
