obicz pole trójkąta:
a=1,5dm
h=0,2m
a=3cm
h=3/4
P=a*h:2
a=1,5dm=150cm
h=0,2m=20cm
p=(150*20):2=1500cm2
h=3/4cm
P=(3*3/4):2=2 1/4cm2
=0,15
=
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P=a*h:2
a=1,5dm=150cm
h=0,2m=20cm
p=(150*20):2=1500cm2
a=3cm
h=3/4cm
P=(3*3/4):2=2 1/4cm2
=0,15
=