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CBSE Class 10 Answered

please help....
Asked by | 12 Mar, 2009, 12:15: PM
Expert Answer

TETA / 360 * 2 pi r    is used to find the length of an arc of a sector  of angle θ.

ETA / 360 * 2 pi   r + 2r  is used to find the perimeter of a sector of angle θ.

Answered by | 12 Mar, 2009, 12:22: PM
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