Question

perimeter of sector of a circle with redius r and centrel angel 0​

Answer 1

Answer:

Step-by-step explanation:

Given−

AOB is radius=rand the central angle=θ.

To find out−

the perimeter of the sector AOB=?

Solution−

The arc length AB=

360

o

θ

​

×2×π×r=

360

o

π θ

​

×2r.

Now the perimeter of the

sector=OA+OB+arcAB

=r+r+

360

o

θ

​

×2πr=2r(

360

o

π θ

​

+1).

Ans− Option B.

Answer 2

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