Respostas

2014-03-20T20:03:55-03:00
C=comprimento da circunferencia=16,56
formula => C=π*d , onde d=diametro
A=πr²,, onde r=comprimento do raio;; r=d/2
Achar o diametro
C=π*d => C=16,56; π=3,14
16,56=3,14*d => d=16,56/3,14=5,27388535≈5,274
Achar a area
A=π*r² ; r=d/2=5,274/2 =>r=2,637≈2,64 e π=3,14
A=3,14*(2,637)² => A=3,14*6,953769 => A=21,83483466
A≈21,83