Pole kwadratu wynosi 80cm. Oblicz obwód tego kwadratu
P=a²
80cm²=a²
a=√80cm²
a=√4*20cm²
a=2√20cm
obwód=4*2√20cm=8√20cm
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P=a²
80cm²=a²
a=√80cm²
a=√4*20cm²
a=2√20cm
obwód=4*2√20cm=8√20cm