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r=2√3=1/3h
h=a√3/2
1/3h=2√3
h=2√3*3
h=6√3
6√3=a√3/2
a=6√3*2/√3
a=12
P=12²√3/4
P=144√3/4
P=36√3 j²
r=1/3h(jedna trzecia wysokości)
2√3=1/3h
h=6√3
h=1/2*a2*√3(jedna druga *a do kwadratu*√3)
6√3=1/2*a2*√3 /*2
12√3=a√3 /:√3
a=12
P=1/4*a2*√3(jedna czwarta *a do kwadratu*√3)
P=1/4*144*√3
P=36√3