You need to know how:
- to work out angles using sine and cosine rule
- Area of sectors and length of sectors
- The surface area of a cylinder.
Formulae:
Depending on the question use these re-arranged formulae to find the answer:
Sine rule angle = a/SinA = b/SinB= c/SinC
Cosine rule angle = CosA = Ab^2 + c^2 - a^2 / 2bc
surface area of cylinder = 2 Pi R(radius) H(height) x 2 Pi R^2
Area of sector = angle/360 x Pi R^2
Length of Arc = angle/360 x 2 x Pi x R
Area of segment = Area of sector - Area of triangle
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