📦 Mensuration, Coordinates & Vectors
This chapter covers area and perimeter of 2D shapes, volume and surface area of 3D solids, arc length and sector area, radian measure, coordinate geometry, and vectors. These are popular Paper 2 topics with questions often worth 8-12 marks each. Many formulas are given in the formula sheet, but you must know when and how to apply each one.
Mensuration and vectors are often combined in complex, multi-step problems. For example, you might need to find the volume of a combined solid (cone + hemisphere), then calculate coordinates using vectors. The key to these questions is breaking them down into manageable steps and being systematic about which formula to use for each part.
Areas of 2D Shapes
You should know the area formulas for all standard shapes. While some are given in the formula sheet, being familiar with them saves time during the exam. Always draw a diagram and label all dimensions clearly before calculating.
📏Areas of 2D Shapes
Area formulas for common 2D shapes. All must be memorised.
A = l \times bA = \frac{1}{2} \times b \times hA = b \times hA = \frac{1}{2}(a + b) \times hA = \pi r^2C = 2\pi r = \pi dWhat the full chapter covers
Areas of 2D Shapes
Arc Length & Sector Area
Volumes & Surface Areas of 3D Solids
Coordinate Geometry
Vectors in Two Dimensions
3D Solids Exam Strategy
Common Vector Mistakes
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