The arc is the product of the angle and radius of the circle. Then the arc length is 7.065 cm.
It is a locus of a point drawn at an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.
The central angle of π/2 radians in a circle with a radius of 4.5 cm.
The arc is given as the product of the angle and radius of the circle.
[tex]\rm Arc \ length = Angle * Radius\\\\\\Arc \ length = \dfrac{\pi}{2} * 4.5\\\\\\Arc \ length = \dfrac{3.14}{2} * 4.5\\\\\\Arc \ length = 7.065[/tex]
The arc length is 7.065 cm.
More about the circle link is given below.
https://brainly.com/question/11833983
