Class 9MathematicsSurface Areas and Volumes
Cone
Circular base, tapering to a point. Radius r, height h, slant height l. l² = h²+r². CSA = πrl. TSA = πr(r+l) = πr(r+l). Volume = ⅓πr²h. A cone is ⅓ of a cylinder with same base and height.
10 examples
Concept check 1
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on concept check and show the working clearly.
Definition to application 2
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on definition to application and show the working clearly.
Formula warm-up 3
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on formula warm-up and show the working clearly.
Reasoning practice 4
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on reasoning practice and show the working clearly.
Board-style short answer 5
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on board-style short answer and show the working clearly.
Mistake correction 6
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on mistake correction and show the working clearly.
Visual interpretation 7
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on visual interpretation and show the working clearly.
Applied word problem 8
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on applied word problem and show the working clearly.
Revision challenge 9
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on revision challenge and show the working clearly.
Exam recap 10
For Class 9 Mathematics, explain or solve a cone question from the chapter "Surface Areas and Volumes". Focus on exam recap and show the working clearly.