Maths formulas 0.0 / 5 ? MathematicsformulasGCSEWJEC Created by: 14meganCreated on: 18-04-19 19:05 area of trapezium 1/2(a+b)h 1 of 23 volume of prism area of cross section x length 2 of 23 area of triangle* 1/2 x b x h or 1/2absinC 3 of 23 sine rule for lengths a/sinA = b/sinB = c/sinC 4 of 23 sine rule for angles* sinA/a = sinB/b = sinC/c 5 of 23 cosine rule for lengths a²=b²+c²-2abcosA 6 of 23 cosine rule for angles* A=cos-1(b²+c²-a²/2bc) 7 of 23 frequency density = ?* frequency/class width 8 of 23 frequency = ?* frequency density x class width 9 of 23 arc length = ?* angle/360 x 2 x pi x r 10 of 23 area of a sector = ?* angle/360 x pi x r² 11 of 23 area of a curved face = ?* 2 x pi x r x h 12 of 23 area of 2 circular faces = ?* 2 x pi x r² 13 of 23 surface area of a cylinder = ?* 2 x pi x r x h + 2 x pi x r² 14 of 23 volume of sphere = ? 4/3 x pi x r³ 15 of 23 surface area of a sphere = ? 4 x pi x r² 16 of 23 volume of a cone = ? 1/3 x pi x r² x h 17 of 23 surface area of a cone = ? pi x r x l + area of base 18 of 23 volume of a pyramid = ?* 1/3 x area of base x height 19 of 23 surface area of a pyramid = ?* area of base + area of all its sides 20 of 23 taxable income = ?* gross income - personal allowance 21 of 23 net income = ?* gross income - tax 22 of 23 acceleration = ?* change in y/change in x 23 of 23
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