Question

Find the perimeter of each of the following shapes if the arc in each figure is circular​

Answer 1

Answer:

i think this is the ans of your qus

Answer 2

Perimeter of sector is 20.476 (cm)

Step-by-step explanation:

1. Radius of circular sector = 5 (cm)

2. Angle subtend by arc at centre of circle is 120°.

3. Perimeter of arc $\mathbf{(P_{arc})=\frac{120}{360}\times (2\pi R)}$       ...1)

4. On putting the value of pi and radius(R) of circle in equation 1)

   We get

   $\mathbf{(P_{arc})=\frac{120}{360}\times (2\times \frac{22}{7}\times 5)=10.476 (cm)}$

5. Now perimeter of sector

   $\mathbf{(P)=P_{arc}+R+R=10.476+5+5=20.476 (cm)}$