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h=a√3:2=4√3/:√3
a:2=4
a=4×2=8
p=a²√3:4=8²√3;4=16√3j.²
2)
a= bok
d= przekątna
d=a√2
a√2=a+5
a√2-a=5
a(√2-1)=5
a=5:(√2-1)
a=5(√2+1)=5√2+5
pole=a²=(5√2+5)²=50+50√2+25=50√2+75=25(2√2+3)j.²