# Right Circular Cone

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In the above figure â€˜râ€™ is the radius of the base, h is the height andis the slant height of the right circular cone.

- Volume = Ã— area of the base Ã— height
^{2}h- Slant height =
- Curved surface area (CSA) = Ï€r
- Total surface area (TSA) = (CSA + Area of the base)
^{2}

# Frustum of Cone

A cone whose top portion is sliced off by a plane which is parallel to the base is called frustum of cone.

Formation of frustum:

However, for the sake of representing the formula, we will use another form of frustum right now as given below:

In the above figure, r is the radius of the base, h is the vertical height of the frustum and Î» is the slant height of the frustum.

- Volume =
- Slant height =
- Curved Surface Area (CSA) = Ï€(R + r) Î»
- Total Surface Area (TSA) = CSA + Area of the Top + Area of the base
^{2}+ Ï€R^{2}^{2}+ R^{2}) - To find the height (H) of original cone.