Checking progress account…
Opening your study space…
Checking progress account…
Opening your study space…
Lesson
A frustum is formed when the top of a cone is cut parallel to the base, removing a smaller cone. Its curved surface area is π(r₁ + r₂)l and its volume is (1/3)πh(r₁² + r₂² + r₁r₂). Frustums appear in buckets, lampshades, frustum-shaped pots, and industrial moulds.
Learning objectives
Understand frustum of a cone in the Mensuration chapter.
Connect the idea with formulas, examples, and exam-style questions.
Use flashcards, notes, MCQs, and LAQs to check readiness.
Lesson
Ready to check what you remember?
Continue to revisionStudy path
Notes
Review the compact notes before moving into recall.
Open notesPractice
Choose one small set. The full bank opens only inside the practice session.
In this chapter
Now on Frustum of a Cone. Next up: Composite Solids and Recasting.
Lesson progress
Save this lesson when done. Next: Composite Solids and Recasting.
Keep moving