Odpowiedź:
a=5cm
b=5-3 =2 cm
obwód = 2a+2b
O=2×5 +2×2=10+4=14cm
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Odpowiedź:
a=5cm
b=5-3 =2 cm
obwód = 2a+2b
O=2×5 +2×2=10+4=14cm