Understanding Area, Perimeter & Volume
Area measures the space inside a 2D shape. Perimeter is the distance around it. Volume measures space inside a 3D object. These concepts are essential for construction, design, and everyday life.
Key Points:
Top Tips
- Draw and label diagrams - it helps visualise the problem
- For compound shapes, split into rectangles/triangles and add areas
- Double-check your units in the final answer
Worked Examples
🎬 Video Tutorials
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Area of Basic Shapes
⏱️ 10:15Rectangles, parallelograms, triangles and trapeziums.
Area of Compound Shapes
⏱️ 8:42Breaking complex shapes into simpler parts.
Surface Area
⏱️ 11:30Finding surface area of 3D shapes.
🔗 More videos: Visit Maths Genie, Corbett Maths, or BBC Bitesize for more free GCSE maths resources!
Rules to Follow
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Area = length × width. Example: 8cm × 5cm = 40cm²...
Area = ½ × base × height. The height must be perpe...
Area = πr². Circumference = πd or 2πr. Remember: π...
Volume = area of cross-section × length. Works for...
Area uses cm², m². Volume uses cm³, m³. Always che...