Instruction

1

In the simplest case, if you construct a circle of radius R, then its diameter will be equal to

D = 2 * R

If the radius

D = L/N where L is the length

The diameter

D = 2 * v(S/P), where S is the area of a circle, N is the number of P.

D = 2 * R

If the radius

**of the circle**is not known, but is known for its length, the diameter can be calculated according to the formula of length**of circumference**D = L/N where L is the length

**of the circumference**, N is the number of P.The diameter

**of the circle**can be calculated by knowing the area of a circle it limitedD = 2 * v(S/P), where S is the area of a circle, N is the number of P.

2

In special cases the radius

If the circle inscribed in a triangle, then its radius is given by

R = S/p where S is the area of a triangle, p = (a + b + c)/2 – properiter triangle.

**of the circle**can be found if it is described or inscribed in a triangle.If the circle inscribed in a triangle, then its radius is given by

R = S/p where S is the area of a triangle, p = (a + b + c)/2 – properiter triangle.

3

For the

R = (a * b * c)/4 * S, where S is the area of a triangle.

**circle**described about a triangle, the formula for the radius has the formR = (a * b * c)/4 * S, where S is the area of a triangle.