Surface area — AMC & AIME Problems

Practice every real AMC 8, AMC 10, AMC 12, and AIME problem that uses surface area — a geometry concept — each with a professionally curated solution, many with a video solution too, from LIVE by Po-Shen Loh. Browse all concepts or the full past-contest archive.

All of these problems are used with official legal permission of the Mathematical Association of America (MAA).

AMC 8

1989 AMC 8 Problem 23 · 1991 AMC 8 Problem 15 · 1993 AMC 8 Problem 17 · 1997 AMC 8 Problem 21 · 2000 AMC 8 Problem 22 · 2002 AMC 8 Problem 22 · 2003 AMC 8 Problem 13 · 2006 AMC 8 Problem 18 · 2008 AMC 8 Problem 16 · 2009 AMC 8 Problem 25 · 2012 AMC 8 Problem 21 · 2014 AMC 8 Problem 19 · 2025 AMC 8 Problem 8

More geometry concepts

3D geometryaltitudeangle bisectorangle bisector theoremangle chasingangle sumannulusarcareaarea decompositionarea ratioBrahmagupta’s Formulacentroidchordcirclecircle areacircumcircle, circumcenter, and circumradiuscircumferenceconecongruence (geometry)coordinate geometrycube geometrycyclic quadrilateralcylinderdiagonaldistance formulaellipseequiangular polygonequilateral triangleEuler’s Polyhedron FormulaHeron’s Formulahomothetyhyperbolaincircle, incenter, and inradiusinscribed angleisosceles trianglekitelattice pointlaw of cosineslaw of sinesmass pointsmedian (geometry)midpointnet (3D geometry)paper foldingparabolaparallel linesparallelogramperimeterperpendicular bisectorPick’s Theorempolyhedronpower of a pointpower scaling of length, area, and volumePtolemy’s TheorempyramidPythagorean TheoremPythagorean Tripleradical axisrectanglerectangular prismreflection (geometry)regular polygonrhombusright trianglesectorshoelace formulasimilarityspecial right trianglespheresquare (geometry)Stewart’s Theoremtangent circlestangent linetransformationtrapezoidtriangle areatriangle inequalitytrigonometric identitytrigonometryvectorViviani’s Theoremvolume