Oblicz obwód Trójkąta ACD, jeśli pole trapezu BCDE jest równe 7.
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P-pole trapezu
P=
|AC|=|DC|=|AB|+|BC|=2,5+2=4,5
obwod ACD=|AC|+|CD|+|AD|=4,5+4,5+=9+
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P-pole trapezu
P=
|AC|=|DC|=|AB|+|BC|=2,5+2=4,5
obwod ACD=|AC|+|CD|+|AD|=4,5+4,5+=9+