👤

determinati lungimea inaltimii unui triunghi echilateral cu latura de:a)4cm b)6\/~3cm c) x cm

Răspuns :

[tex]h = \frac{l \sqrt{3} }{2} [/tex]

[tex]a)l = 4 \: cm[/tex]

[tex]h = \frac{4 \sqrt{3} }{2} = 2 \sqrt{3} \: cm[/tex]

[tex]b)l = 6 \sqrt{3} \: cm[/tex]

[tex]h = \frac{6 \sqrt{3} \times \sqrt{3} }{2} = \frac{6 \sqrt{9} }{2} = \frac{6 \times 3}{2} = 3 \times 3 = 9 \: cm[/tex]

[tex]c)l = x \: cm[/tex]

[tex]h = \frac{x \sqrt{3} }{2} \: cm[/tex]
[tex]h= \frac{l \sqrt{3} }{2} [/tex]
a)⇒[tex] \frac{4 \sqrt{3} }{2} =2 \sqrt{3} [/tex]
b)⇒[tex] \frac{6.3}{2} =9[/tex]
c)⇒[tex] \frac{x \sqrt{3} }{2} [/tex]