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C = π*D
C = 3.1416*8
C = 25.1328
La longitud de la circunferencia es de 25.1328 cms
La formula del area es:
A= π * R²
donde, R = Radio.
R = 1/2 diámetro:
R = 1/2*8 = 4
A = π * R²
A = 3.1416* 4²
A = 3.1416*16
A = 50.2656
El area es de 50.2656 cms²
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