Diameter? a line that connects two points of the curved shape and thus passes through its center.

In applied problems are often required to find the diameter of a circle or sphere.

Diameter of circle can be found on its radius, length and area of a circle.

The diameter of the ball are radially volume and surface area.

instructions

1

**Diameter** a circle or a sphere, if we know their radii, can be found in the knowledge that the diameter is two times the radius. Thus, for finding the radial diameter, the radius must be multiplied by two:

D = 2 * R, where R? figure range.

2

**Diameter** circumference, if we know its length, can be found from the formula:

D = L / pi where L? circumference, pi? constant approximately equal to 3.14.

3

**Diameter** circle if its known area can be found by the formula:

D = 2 * (S / pi) ^ 1/2, where S? area of a circle.

4

**Diameter** ball, if known, its volume can be found by using the formula:

D = (6V / pi) ^ 1/3, where V? the volume of a sphere.

5

If the known surface area of the ball, its diameter can be determined by the formula:

D = (S / pi) ^ 1/2, where S? the surface area of the ball.