Measure of an arc of a sector of a circle is 90° and its radius is 7cm .Find its perimeter of sector. If 25 then why?
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Area is two dimensional; All of what's inside the circle. perimeter of the sector is the sum of the lengths of all its boundaries.thus the perimeter of the sectoris L+2r units. θ 360 × 2 π ( r ) + 2 r That would be the length of the arc in the first part and twice the radius in the second part.
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