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1 częśc podstawy = 371,7m
2 część podstawy = 371,7m:5,25=70,8
cała podstawa czyli nasz bok
a =371,7m+70,8 m=442,5
h=442,5:5,9=75
P=1/2*a*h
P=1/2*442,5*75=16593,75
371,7m+371,7:5,25=371,7m+70,8m=442,5m
h=442,5:5,9=75m
pole=½ah=½×442,5×75=16593,75m²