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d = 2r
d = 12m
jaszczura:
l=2πr
z pkt A do B l=πr
l= 3,1 × 6
l= 18,6m
18,6 - 12 = 6,6m
2×6m=12m
jaszczurka:
12×3,1=37,2m
37,2m-12m=25,2m
Odp: Droga jaszczurki była dłuższa od drogi ryby o 25,2m.