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a√2=1,6 |√2
a=1,6/√2
a=1,6√2/2
a=0,8√2
obliczam pole kwadratu
P=a²
P=(0,8√2)²
P=1,28
d-przekątna =1,6m
^potęga /podzielic
P=(1,6m)^2 /2
P=2,56m2 /2
P=1,28m2
Odp: Pole tego kwadratu wynosi 1,28 m2