RD Sharma Class 9 Solutions Surface Areas and Volume of A Right Circular Cone

RD Sharma Class 9 Solutions Surface Areas and Volume of A Right Circular Cone

Summary:

1. A Right circular cone is a solid generated by revolving a line segment which passes through a fixed point and which makes a constant angle with fixed line. The fixed point is called the vertex of the cone, the fixed line is called the axis of the cone.
2. For a circular cone of base radius r, slant height l and height h, we have
   • Curved surface area =πrl
   • Total surface area = πr(l+r)
   • Volume = [latex]\frac { 1 }{ 3 } (area of the base)\times height[/latex]

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