prosze o zadanie 8 ,5 3
3)Pole:
P=
Obwód:
5)
5:15
8)
|AB|+|BC|+|CD|+|DA|=60cm
|AB|+|BD|+|DA|=52cm
|BC|+|CD|+|BD|=44cm
|AB|+|BC|+|CD|+|DA|+2|BD|=|AB|+|BD|+|DA|+|BC|+|CD|+|BD|
60cm+2|BD|=52cm+44cm
60cm+2|BD|=96cm
2|BD|=36cm
|BD|=18cm
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3)Pole:
P=
Obwód:
5)
5:15
8)
|AB|+|BC|+|CD|+|DA|=60cm
|AB|+|BD|+|DA|=52cm
|BC|+|CD|+|BD|=44cm
|AB|+|BC|+|CD|+|DA|+2|BD|=|AB|+|BD|+|DA|+|BC|+|CD|+|BD|
60cm+2|BD|=52cm+44cm
60cm+2|BD|=96cm
2|BD|=36cm
|BD|=18cm