Oblicz pole pięciokąta o obwodzie 35cm
35cm/5=7cm
7 * 7=49cm2
35:5=7
bok równy 7
(49 pier. z 3) /4
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35cm/5=7cm
7 * 7=49cm2
35:5=7
bok równy 7
(49 pier. z 3) /4