[tex]\it \mathcal{A}sal\breve a = 7,48\cdot3,25=24,31\ m^2=2431\ dm^2=243100\ cm^2\\ \\ \\ \mathcal{A}_{hexagon}=6\cdot\dfrac{\ell^2\sqrt3}{4}=6\cdot\dfrac{12^2\sqrt3}{4}=6\cdot\dfrac{144\sqrt3}{4}=6\cdot36\sqrt3=216\sqrt3\ cm^2\\ \\ \\ \dfrac{243100}{216\sqrt3}=\dfrac{243100\sqrt3}{216\cdot3}\approx\dfrac{421062}{648}\approx650\ pl\breve aci\ necesare[/tex]