r = 3
r= 1/3 h
h = a √3 / 2
3 = 1/3 *h =>> h=9cm =>> 9= a √3 // *√3
9√3 = 3a // :3
a= 3√3 =>> bok tego trójkąta
zad
r=3
r=⅓h h=a√3:2
r=⅓·a√3:2=a√3:6
3=a√3:6
a√3=3·6
a√3=18
a=18:√3=18√3:3=6√3
a=6√3 to dl. boku trojkata
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r = 3
r= 1/3 h
h = a √3 / 2
3 = 1/3 *h =>> h=9cm =>> 9= a √3 // *√3
9√3 = 3a // :3
a= 3√3 =>> bok tego trójkąta
zad
r=3
r=⅓h h=a√3:2
r=⅓·a√3:2=a√3:6
3=a√3:6
a√3=3·6
a√3=18
a=18:√3=18√3:3=6√3
a=6√3 to dl. boku trojkata