Answer :

luana
[tex]Heigh \ for\ equilateral \ triangle \ is \calculated\ from\ formula:\\\\h=\frac{\sqrt3}{2}a\\\\a-side\ of\ triangle\\\\a=9cm\\\\h=\frac{\sqrt3}{2}*9=\frac{9\sqrt3}{2}=4,5\sqrt2cm[/tex]

Other Questions