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P=D•pi
D=r•2
D=9cm•2=18cm
P=18 cm•3,14=56,52cm.
Área =r^2•pi
A=(9cm)^2•3,14=254,34cm^2
RESPUESTA:
Perímetro ➡ 56,52cm
Área ➡ 254,34cm^2