Oblicz pole kwadratu,którego obwód jest równy 32 cm.
Obwód = 4a
4a=32
a=8cm
Pole = a²=8²=64cm²
Ob = 32cm
Ob = 4 * a
32 = 4 * a
a = 32 : 4
a = 8cm
P = a * a
P = 8cm * 8cm
P = 64cm^2 --------- odpowiedź
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Obwód = 4a
4a=32
a=8cm
Pole = a²=8²=64cm²
Ob = 32cm
Ob = 4 * a
32 = 4 * a
a = 32 : 4
a = 8cm
P = a * a
P = 8cm * 8cm
P = 64cm^2 --------- odpowiedź