Odpowiedzi

2009-12-08T16:01:35+01:00
(a+b) * h
P = ------------
2

h=4 a=7 b=7+4+4√3/3=11+4√3

(11+4√3/3+7) * 4
P=----------------------
2

(18+4√3/3) * 4 72 +16√3 /3
P= ------------------------- = ---------------------
2 2

24 + 16√3
P=--------------------- = 12+8√3
2