Question

Area of a sector of central angle 120° of a circle is 3π cm^2. Then the length of the corresponding arc of this sector is
a} 5•8 cm
b} 6•1 cm
c} 6•3 cm
d} 6•8 cm​

Answer 1

Step-by-step explanation:

given angle is 120 and area is 3π

we know area of a sector is

Area = π r ^2 (C/360)

=> 3π=π * r^2 *(120/360)

=>r^2=9

so r will be 3

so the length of arc is 3cm