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P=a²
a=3cm
P=9cm²
w skali 1:2
a=3:2=1,5cm
P=2,25cm²
a₁=3cm
P=?
P=(3cm)²
P=9cm²
W skali 1:2
P=a₂²
a₂=½a
a₂=½*3cm
a₂=1½cm
P=(1½cm)²
P=(³/₂cm)²
P=⁹/₄cm²
P=2¼cm²
w skali 1:1=12cm
w skali 1:2=6cm
tak mi sie wydaje