Pola:
P= πr²
r=1cm
P= π*(1cm)²
P= 1πcm²
r=0,3km = 300m
P= π* (300m)²
P= 90000πm²
r=2/3mm
P=π* (⅔mm)²
P= 4/9πmm²
P=πr²
r=2dm= 20cm
P= π*(20cm)²
P=400πcm²
Obwody:
l= 2πr
r= 1cm
l= 2π*1cm
l=2πcm
r=0,3km= 300m
l= 2π * 300m
l= 600πm
r= 2/3mm
l= 2π *2/3mm
l= 4/3πmm
r= 2dm= 20cm
l= 2π*20cm
l= 40πcm
Licze na naj ;))
P= pi*r kw pi=3,14O=2*pi*rr=1cm P=3,14*1cm kw = 3,14*1cm=3,14 cm kw O=2*3,14*1=3,14*2=6,28 cmr=0,3 km P=3,14*0,3km kw.=3,14*0,09=0,2826km O=2*3,14*0,3km=3,14*0,6=1,884r=2,3mm P=3,14*2,3mm kw=3,14*5,29mm=16,6106mm kw O=2*3,14*2,3mm=3,14*4,6=14,444mm kwr=2 dm P=3,14*2dm kw= 3,14*4dm=12,56 dm kw O=2*3,14*2dm=3,14*4=12,56 dm
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Pola:
P= πr²
r=1cm
P= π*(1cm)²
P= 1πcm²
P= πr²
r=0,3km = 300m
P= π* (300m)²
P= 90000πm²
P= πr²
r=2/3mm
P=π* (⅔mm)²
P= 4/9πmm²
P=πr²
r=2dm= 20cm
P= π*(20cm)²
P=400πcm²
Obwody:
l= 2πr
r= 1cm
l= 2π*1cm
l=2πcm
l= 2πr
r=0,3km= 300m
l= 2π * 300m
l= 600πm
l= 2πr
r= 2/3mm
l= 2π *2/3mm
l= 4/3πmm
l= 2πr
r= 2dm= 20cm
l= 2π*20cm
l= 40πcm
Licze na naj ;))
P= pi*r kw pi=3,14
O=2*pi*r
r=1cm P=3,14*1cm kw = 3,14*1cm=3,14 cm kw O=2*3,14*1=3,14*2=6,28 cm
r=0,3 km P=3,14*0,3km kw.=3,14*0,09=0,2826km O=2*3,14*0,3km=3,14*0,6=1,884
r=2,3mm P=3,14*2,3mm kw=3,14*5,29mm=16,6106mm kw O=2*3,14*2,3mm=3,14*4,6=14,444mm kw
r=2 dm P=3,14*2dm kw= 3,14*4dm=12,56 dm kw O=2*3,14*2dm=3,14*4=12,56 dm