Berechne als Erstes einen der Zylinder.

$(2\text{ cm}{)}^2\cdot \pi \cdot 3\text{ cm}\approx \mathrm{37,7}{\text{ cm}}^3(2\backslash text\{\; cm\})^2\backslash cdot\backslash pi\backslash cdot3\backslash text\{\; cm\}\backslash approx37\{,\}7\backslash text\{\; cm\}^3$

Berechne nun den Quader.

$13\text{ cm}\cdot 4\text{ cm}\cdot 3\text{ cm}=156{\text{ cm}}^{3}13\backslash text\{\; cm\}\backslash cdot\; 4\backslash text\{\; cm\}\backslash cdot3\backslash text\{\; cm\}=156\backslash text\{\; cm\}^3$

Nun musst du nur noch dreimal den Zylinder mit dem Quader addieren.

$3\cdot \mathrm{37,7}{\text{ cm}}^3+156{\text{cm}}^3\approx 269.1{\text{ cm}}^{3}3\backslash cdot37\{,\}7\backslash text\{\; cm\}^3+156\backslash text\{cm\}^3\backslash approx269.1\backslash text\{\; cm\}^3$