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a) r= 1,2m
p= = 3,14*1,44= 4,5216cm
b) d= 3,6 dm = 36cm
r= 36/2= 18cm
p= 3,14*18 = 1017,36 cm
c) 2r = 4 / :
2r=4 / :2
r=2
p=
Jeśli nic nie pomyliłem to jest dobrze :) Pozdrawiam