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  • Użytkownik Zadane
2009-05-23T16:57:20+02:00
A) a = 3√2
P = a²√3/4
P = (3√2)²√3 / 4 = 18√3/4 = 4,5√3

b) h = 4
h = a√3/2
2h = a√3
a = 2h/√3 = 2h√3/3
a = 2*4*√3/3 = 8√3/3

P = (8√3/3)²√3/4 = 192√3/36 = 5⅓√3

c) l = 39
3a = l
a = 13
P = 13²√3/4 = 169√3/4 = 42,25√3