Cone Slant Height, Volume, Curved Surface Area, Total Surface Area Formula

Let Radius of base = r and height = h. Then,
$$\begin{aligned} \text{Slant Height of cone, l = }\sqrt{r^2+h^2} units \\ \text{Volume of cone = }\left( \frac{1}{3}\pi r^2 h \right) \text{cubic units} \\ \text{Curved surface area of cone = }\left( \pi rl \right) \text{sq. units} \\ \text{Total surface area of cone = }\left( \pi rl + \pi r^2 \right) \text{sq. units} \\ \end{aligned}$$