Oblicz pole trapezu przedstawionego poniżej.
a=7+8-2=15-2=13cm
b=7cm
h=9cm
P=13+7x9:2=
20x9:2=180:2=
90 cm2
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a=7+8-2=15-2=13cm
b=7cm
h=9cm
P=13+7x9:2=
20x9:2=180:2=
90 cm2