Question

In a circle having radius r, an arc of a circle subtends an angle of measure ø at the

centre, then find the length of arc​

Answer 1

Answer:

Circumference of a circle of radius r is equal to 2πr

Angle subtended by circumference at the center in radians is 360

o

Hence, length of arc subtending an angle θ

o

is: l=

360

θ

×2πr

l=

180

πθr