Ex 4 dau coroana va rog!!!!!!
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Răspuns:
[tex]h = l \times \sqrt{3} \div 2[/tex]
[tex]8 \sqrt{3 \: \: = \: l \times \sqrt{3 \div 2} } [/tex]
/
[tex]16 \sqrt{3 = l \times \sqrt{3} } [/tex]
[tex]l = 16[/tex]
[tex]permetrul = 3 \times l[/tex]
[tex]perimetrul = 48 \: cm[/tex]