geometry formulas for area and perimeter of shapes

Hexagon

circle area and perimeter formula
$$\textbf{Area of the hexagon}$$
$$A = \frac{1}{4} 6 b^2 \cot\bigg(\frac{\pi}{6}\bigg) $$
$$ = \frac{1}{4} 6 b^2 \frac{\cos\big(\frac{\pi}{6}\big)}{\sin\big(\frac{\pi}{6}\big)} $$
$$\textbf{Perimeter of the hexagon}$$
$$P = 6 b $$