Tylko podpunkt c.
d - przekątna podstawy
d²=(2√2)²+(2√10)²
d² = 8 + 40
d²=48
d=√48
d=4√3
P=4√3 * 3√3
P = 36
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d - przekątna podstawy
d²=(2√2)²+(2√10)²
d² = 8 + 40
d²=48
d=√48
d=4√3
P=4√3 * 3√3
P = 36