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d=1,6 m
a√2=1,6 / *√2
2a= 1,6√2 / :2
a= 0,8√2
P=a*a
P=0,8√2*0,8√2
P= 1,28
Odp.: Pole tego kwadratu wynosi 1,28 m².
P = 1/2 * e * f
P = 1/2 * 1,6 * 1,6 = 1,28 m²
a²+a²=(1,6)²
2a²=2,56
a²=1,28
a=√1,28=√0,8*0,8*2=0,8√2
P=a²=(0,8√2)²=1,28m²