SHAIK AASIF AHAMED
Last Activity: 10 Years ago
Hello student,
perimeter of sector = 2

rA/360 + 2r
Here, A = angle of sector
And, length of arc of semi-circle of same radius =

r
Thus,

rA/180 + 2r =

r
On solving,
A = 180(1 - 2/

) taking

= 22/7
We get, A = 720/11
Hence A is the correct answer
Thanks and Regards
shaik Aasif
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