GCSE Maths Revision Guide
Surface Area
Calculate surface areas of cuboids and spheres. This free GCSE Maths module combines short explanations, worked examples, flashcard-style recall, and timed practice so students can revise the topic without creating an account.
Foundation Skills
Cuboid Surface Area
Add up the area of all 6 faces (3 pairs of rectangles).
Formula: SA = 2(lw + lh + wh)
Example: 3 × 4 × 5: SA = 2(12 + 15 + 20) = 2(47) = 94 cm²
Higher Skills
Sphere Surface Area
Formula: SA = 4πr²
Example: r = 5: SA = 4π(25) = 314.2 cm²
Hemisphere
Curved surface + flat circular base.
Formula: SA = 3πr²
Example: r=4: SA = 3π(16) = 150.8 cm²