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P = ½*3*4 = 1,5*4 = 6cm²
b)6cm,5cm,5cm
P = ½*5*5 = 12,5cm²
Podpowiedź: najdłuższy bok to zawsze naprzeciwprostokątna.
3cm,4cm,5cm
p=1/2 * 3*4=1,5*4=6cm²
b) P = ½ * 5 * 5 = 12,5cm²