[tex]O=4a\\P=ah\\\\h=\frac{72}{6}\\\\h=12\,[cm]\\\\\\a=\frac{72}{4}\\\\a=18\,[cm]\\\\\\P=12\cdot18\\\boxed{P=216\,cm^2}[/tex]
obwód - 72 cm
wysokość (h) - 72 cm : 6 = 12 cm
pole (p) = a * h
a = 72 cm : 4 = 18 cm
p = 18 cm * 12 cm = 216 cm²
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[tex]O=4a\\P=ah\\\\h=\frac{72}{6}\\\\h=12\,[cm]\\\\\\a=\frac{72}{4}\\\\a=18\,[cm]\\\\\\P=12\cdot18\\\boxed{P=216\,cm^2}[/tex]
obwód - 72 cm
wysokość (h) - 72 cm : 6 = 12 cm
pole (p) = a * h
a = 72 cm : 4 = 18 cm
p = 18 cm * 12 cm = 216 cm²