The sector of a circle has radius of 21cm and angle 135° find it's perimeter
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r = 21cm
theta = 135°
Perimeter of sector is =. 2r + thera× r
= 2×21 + 135×21
=. 42 + 2835
=. 2877cm
Thanks
theta = 135°
Perimeter of sector is =. 2r + thera× r
= 2×21 + 135×21
=. 42 + 2835
=. 2877cm
Thanks
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