at O. The major arc CD subtends an angle 7 x at O. Find, in terms of π, the length of the minor arc CD. [1] 6) A sector of a circle of radius 17 cm contains an angle of x radians. Given that the perimeter of the sector is 53 cm, find the value of x. [1] 6. Radian measure arcs sectors and segments Name: Class: Date: a) Find l given r = 9 m and ... An arc is a part of the circumference of a circle. It is the curved part of the perimeter of a sector. Like the area of a sector, the length of an arc depends on the radius of the circle and the angle between the two radii that form the sector that the arc is part of. Since an arc is just a section of the circumference of a circle, the length ... The sector area of a circle may required to be calculated in SI or metric or US customary unit systems, therefore this sector calculator is featured with major measurement units conversion function to find the output values in different customary units such as inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm) by using this below conversion table.