Q. 73.6( 19 Votes )

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Answer :

Radius of circle, r = 3.4 cm


Perimeter of sector, P = 12.8


P = length of arc + 2× radius


Length of arc, l = P – 2×r


l = 12.8 – 2(3.4)


l = 6 cm


Let the APC be θ


As we know that,





Also ,



On Substituting the value of theta from above equation,





A = 10.2 sq. cm


Area of Sector is 10.2 sq. cm


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