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Druga wysokość:
48cm²:5cm=9,6cm
Boki w skali 1:2
12cm:2=6cm
5cm:2=2,5cm
b=5
ha=4
hb=?
P=a*ha=12*4=48 cm2
P=b*hb
48=5*hb
hb=9,6 cm2
skala:
a=6 cm
b=2,5 cm
P=12cm×4cm
P=48cm²
12cm÷2=6cm
5cm÷2=2,5cm