2r + (2pi r)/4 or 2r x (1 + pi/4)
eg radius 3 units, circumference 6 pi units, arc of quadrant 1.5 pi units, plus 2 x radius ie 6 so P = (1.5 pi + 6) units (approx 10.7)
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perimeter of what quadrant?
It is the sum of its 4 sides which is its perimeter.
To find the perimeter you add and to find the area we multiply.
what is the perimeter of a pentegon?
In the first quadrant.