Question

Area of the sector of a circle of radius 18 cm is 108 pie CM square. find the length of the corresponding arc

Answer 1

Area of sector = Xπr^2/360=108π

r=18

x = central angle=?

X = 108πx 360/π18^2 = 120 degree

Arc length=Xx2πr/360

x = 120

r=18

Arc length=120x2xπxl8/360

= 12π = 12x3.14=37.68cm