Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The perimeter of a certain sector of a circle is equal to the length of the arc of the semicircle. Then the angle at the centre of the sector in radians is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: Let the radius of the circle 
and angle of sector 
Perimeter of sector 
Length of the arc of the semicircle 
.
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