Question

The perimeter of a certain sector of a circle is
equal to the length of the arc
of
semicircle having the
same radius. The angle of the
sector is
​

Answer 1

Answer:

Step-by-step explanation:as given in question, half perimeter of circle is equal to perimeter of arc of same radius, so perimeter of arc = r+r+l= 2r+l. And perimeter of semicircle is πr.