This key facts covers Key Formulas within Surface Area for GCSE Mathematics. Revise Surface Area in Geometry & Measures for GCSE Mathematics with 12 exam-style questions and 3 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 2 of 5 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Key Formulas
| Cuboid | SA = 2(lw + lh + wh) |
| Cube | SA = 6s² (6 identical square faces) |
| Cylinder | SA = 2πr² + 2πrh (two circles + rectangle) |
| Prism | SA = 2 × cross-section area + perimeter × length |
| Cone | SA = πr² + πrl (base + curved surface) |
Practice questions for Surface Area
A cuboid has length l, width w and height h. What is its total surface area?
Explain how you could use a net to find the surface area of a 3D solid.
Quick recall flashcards
Surface Area
Sum of areas of all faces
Net
Unfolded 3D shape showing all faces