Question

find the perimeter of a sector of a circle of radius r and of central angle 0(in degree) is​

Answer 1

Answer:

Step-by-step explanation:

Given−

AOBisasectorofradius=randthecentralangle=θ.

Tofindout−

theperimeterofthesectorAOB=?

Solution−

ThearclengthAB=

360

o

θ

​

×2×π×r=

360

o

πθ

​

×2r.

Nowtheperimeterofthesector=OA+OB+arcAB

=r+r+

360

o

θ

​

×2πr=2r(

360

o

πθ

​

+1).

Ans−OptionB.

Answer 2

Answer:

Here is your answer mate,

Step-by-step explanation:

Please check the attachment

*Edit*

Perimeter of line (1 Dimensional figure) is not defined

So, perimeter is not defined

Have a good day