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3dm= 30cm
12cm*30cm=360cm2
2.
P=a*h
po przekształceniu
a=P/h
a=132/11
a=12cm
a=12cm
h=3dm=30cm
p=30cm*12cm=360cmdo kwadratu=36dmdo kwadratu
2. p=132cm
h=11cm
p=a*h
132=11*a
11a=132 /11
a=12 cm
a=12 cm
h=3dm=30cm
P=a*h
P=12cm*30cm
P=360cm
2.
P=132cm
h=11cm
P=a*h
132cm=a*11cm/:11cm
12cm=a