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ex 3 dau coroana ❤❤❤❤❤❤❤​

Ex 3 Dau Coroana class=

Răspuns :

[tex]\it L=12\ cm\\ \\ \ell=75\%\ din\ L=\dfrac{75}{100}\cdot12=\dfrac{900}{100}=9\ cm\\ \\ \\ \mathcal{A}=L\cdot\ell=12\cdot9=108\ cm^2[/tex]