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Question

Area of sector of circle of radius 36 cm is 54πcm2 . Find the length of the corresponding arc of the sector.

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Solution

Given area of sector of circle =54π cm2
Radius of circle=36cm
Now area of circle=πr2×(θ360)
54π=θ360×πr2
θ360=5436×36 …………(1)
and length of arc=2πr(θ360)
L=2π×36×5436×36
[Length of arc =3πcm].

1176890_1317436_ans_e98274d16add42ae820359b38e4ec8d5.jpg

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