geometry formulas for area and perimeter of shapes

Cone

circle area and perimeter formula
$$\textbf{Volume of the cone}$$
$$V = \frac{1}{3} \pi r^2 h$$
$$\textbf{Curved surfaced of the cone}$$
$$O = \pi r \sqrt{r^2+h^2} = \pi r a$$
$$\textbf{Total surface area of the cone}$$
$$O = \pi r \sqrt{r^2+h^2} + \pi r^2$$
$$= \pi r a + \pi r^2$$