Uzupełnij:
a | 1 i 1/2 m
b | ????
Obwód równoległoboku o bokach a i b | 5 i 1/2 m.
Ob= (5 x 2) + ( 0,5 x 2 ) =11
2. ??????
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Ob= (5 x 2) + ( 0,5 x 2 ) =11
2. ??????