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Areas, sectors formulas

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s36131's version from 2016-12-29 05:41

Section

Question Answer
Area of a circle π r sq
Circumference of a circle2π r
Area of semicircle 1/2 π r sq
Perimeter of semicircleπ r+2r
Area of sectorπ r sqθ/360 or 1/2 lr (wher l= length)
Area of minor segment πr sq θ/360 - 1/2r sq sinθ
Area of major segmentArea of circle - area of a quadrant
Area of a quadrantπr Sq /4
Perimeter of a quadrantπr/2 + 2r
Area of minor sector θ/360* πr sq
Area of major sector360-θ/360* πr sq
Area of a ring π(R sq-r sq)
Perimeter of a sector2r + 2πrθ/360
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