Revision GuideGeometry & Trigonometry
Surface Area and Volume Revision Sheet
A stronger revision sheet for cylinders, cones, and spheres that keeps radius, diameter, slant height, and result units clear.
Printable PDFOpen download
Revision GuideGeometry & Trigonometry
Geometry Formula Reference Pack
A richer geometry reference pack covering area, perimeter, circles, and triangle methods with unit reminders and method-selection guidance.
Filename: geometry-formula-reference-pack.pdfFile size: 3 KB
Formula highlights
Circle area
A = pi r^2
Sphere volume
V = 4/3 pi r^3
What this pack is for
Use this pack when you need a printable geometry summary that separates boundary length, enclosed area, and the formulas that connect common flat shapes.
Area versus perimeter
- Perimeter -> boundary length
- Area -> enclosed surface
- Keep linear and squared units distinct
Common formulas
- Rectangle area: l x w
- Rectangle perimeter: 2(l + w)
- Circle area: pi r^2
- Circumference: 2pi r
- Triangle area: 0.5 x base x height
Worked examples
A 6 m by 4 m rectangle has area 24 m^2 and perimeter 20 m.
A circle of radius 3 cm has circumference 6pi cm and area 9pi cm^2.
Quick reminders
- Convert dimensions to a common unit before calculating.
- Composite shapes are often best split into simpler known shapes.
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