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a wiec tak : wzor to (a+b)*h/2
a+b=26cm
h=0,8dm=8cm
wiec juz wystarczy podstawic
26*8/2=104cm²
26x0,08/2=1,04cm
1cm to 0,1dm
h=0.8dm=8cm
P=½(a+b)*h
P=½*26cm*8cm
P=13cm*8cm
P=104cm²