This study notes covers Worked Example: Cuboid 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 4 of 5 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Worked Example: Cuboid
Find the surface area of a cuboid 4cm × 3cm × 2cm.
Solution
SA = 2(lw + lh + wh)
SA = 2(4×3 + 4×2 + 3×2)
SA = 2(12 + 8 + 6) = 2 × 26 = 52 cm²
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