You will need

- The value of the radius of the circle, the Central angle of the arc, the value of the constant π (considered to be 3.14)

Instruction

1

To calculate the length of arcs p you need to use the formula:

p = (2*π*R*n)/360 or p = (π*R*n)/180, where

p - length of a circular arc;

R is the radius of the circle;

n is the size of the Central angle of the arc (in degrees).

Example: Given a circle with a radius of 4 cm and an arc angle of 90 degrees. To calculate

p = (2*3.14*4*90)/360 = 6.28 see Or:

p = (3.14*4*90)/180 = 6.28 see

p = (2*π*R*n)/360 or p = (π*R*n)/180, where

p - length of a circular arc;

R is the radius of the circle;

n is the size of the Central angle of the arc (in degrees).

Example: Given a circle with a radius of 4 cm and an arc angle of 90 degrees. To calculate

**the length of**its arc, it is necessary to use the above formula:p = (2*3.14*4*90)/360 = 6.28 see Or:

p = (3.14*4*90)/180 = 6.28 see