3.Oblicz promienie kół o polach:
a) 16II cm2
b) 100II m2
c) 0,04II dm2
p=IIr2
a)
16II=IIr2I:II
16cm2=r2
r=4cm
b)
100II=IIr2I:II
100cm2=r2
r=10cm
c)
0,04II=IIr2I:II
0.04dm2=r2
0,2dm=r
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p=IIr2
a)
16II=IIr2I:II
16cm2=r2
r=4cm
b)
100II=IIr2I:II
100cm2=r2
r=10cm
c)
0,04II=IIr2I:II
0.04dm2=r2
0,2dm=r