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h = ?
Pole P = (b*c)/2
P = [12 cm *16 cm]/2 = 96 cm²
z twierdzenia pitagorasa
b²+c²=a²
12²+16²=a²
144+256=a²
400=a²
a=20
P=a*h
h=P/a=96/20=4,8