TeX Quellcode:
V_K = \dfrac{4}{3}\pi r^3 = \dfrac{4}{3}\pi \left(\dfrac{\sqrt{3}\cdot a}{2} \right)^3 = \dfrac{4}{3}\pi \cdot \dfrac{3\sqrt{3}\cdot a^3}{8} = \dfrac{\sqrt{3}}{2}\pi a^3