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2014-06-01T09:53:15+03:00
AB = 2BCcos45° = (2*16*√2)/2 = 2⁴√2 = 22,627
AD = BCsin45° = (16*√2)/2 = 2³√2 = 11.313
AC _|_ CB => BAC = 45° => AC = CB ∧ AD = DC
BD = sqrt (DA² + AB²) = √(2⁴ + 2⁶) = 2²√5 = 8,944
Pabcd = AB + BC + CD + DA = AB + BC + 2AD = 2⁴√2 + 2⁴ + 2⁴√2 = 2⁴(2√2 +1) = 61.254
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