Question

what is the length of an arc of circle whose radius 5cm centre angle is 140°​

Answer 1

Answer:

length of an arc of circle whose radius 5cm centre angle is 140°= 140/360× 2×22/7×5 cm = 12.21 cm

Step-by-step explanation:

Mark me Brainliest

Answer 2

Answer:

5cm

Step-by-step explanation:

Let s be the length of the arc subtending an angle θ

R

at the centre of a circle of radius r. Then, θ=s/r.

Here, r=5 cm and θ=15

∘

=(15×

180

π

)

R

=(

12

π

)

R

∴ θ=

r

s

or

12

π

=

5

s

or s=

12

5π

cm

Ans: 5