Geometry
Surface area and volume of cones and frustums
Cone: V = (1/3)πr^2h, lateral area = πrℓ (ℓ = slant height). Frustum: V = (h/3)(R^2+Rr+r^2)π; lateral area = π(R+r)ℓ.
0
Contest appearances
100
Practice problems
1–10
Difficulty levels
Drill this topic
Sign in and tell the coach to drill this knowledge point — it picks questions matched to your current level.