Chapter 13: Circles and Cylinders 0.0 / 5 MathematicsVolume and surface areaGCSEEdexcel Created by: safiarofidiCreated on: 29-08-15 11:50 Circumference of a circle 2πr or πd 1 of 13 Area of a circle πr(squared) 2 of 13 Volume of a cylinder πr(squared)h 3 of 13 What is the meaning of 'r' in the previous formula? r = cross sectional area, the area of the circle 4 of 13 Surface area of a cylinder 2πrh+2πr(squared) 5 of 13 Curved surface area of a cylinder 2πr(squared) 6 of 13 Area of a semicircle 1/2 π r(squared) 7 of 13 Area of a quarter circle 1/4 π r(squared) 8 of 13 Area of a sector (angle x) x/360 π r(squared) 9 of 13 Perimeter of a sector arc length + length + length 10 of 13 Arc length of a semicircle 1/2πd or 1/2 2πr 11 of 13 Arc length of a quarter circle 1/4πd or 1/4 2πr 12 of 13 Arc length of a sector (angle x) x/360πd or x/360 2πr 13 of 13

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