what is the circumference of a sector having 60deg angle with center and radius is 21 cm
A)22
B)44
C)64
D)88
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1
C)64
circumference of a sector= 60/360×2×pi×r+2r
=22+2×21
=22+42
=64cm^2
circumference of a sector= 60/360×2×pi×r+2r
=22+2×21
=22+42
=64cm^2
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