equations 0.0 / 5 ? MathematicsVolume and surface areaGCSEEdexcel Created by: Trindadz01Created on: 06-10-22 19:38 equation for surface area of a circle π r² 1 of 13 circumference equation π x d 2 of 13 area of a sector 1.make a fraction, the number of degrees you get over 360. 2. work out the area or circumference as if it were a normal circle. 3.multiply together 3 of 13 area of a parraelogram b x h 4 of 13 area of a trapezium (a + b) x h /2 5 of 13 curved surface π x d x h 6 of 13 surface area of a cylinder 1. πr² x 2 2. π xd x h 3. add them together 7 of 13 volume of a pyramid 1/3 x base area x verticle height 8 of 13 volume of a cone 1/3 x π x r² x h 9 of 13 surface area of a cone π x r x l 10 of 13 total surface area π x r² + π x r x l 11 of 13 volume of a sphere 4/3 x π x r*3 12 of 13 surface area of a sphere 4 x π x r² 13 of 13
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