La Arista De Un Cubo Mide 12cm.docx
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La arista de un cubo mide 12cm. Calcular: a a a a
a=12cm a) La longitud de su diagonal. D
π =?
π
a
a
d
formula: π« = πβπ π· 2 = π2 + π 2
βπ·2 = βπ2 + π·2
π·2 = 122 + 122
π· = β122 + (β288)
π·2 = 144 + 144 βπ·2 = β288 π· = 16,97ππ
π· = β144 + 288 π· = β432 π· = 12β3 = 20,78ππ
b) El Γ‘rea lateral del cubo. Formula :π΄πΏ = 4 β π π΄πΏ = 4(12)2 π΄πΏ = 4 Γ 144 π΄πΏ = 576ππ2
2
2
c) El volumen del cubo. Formula: π = π3
π£ = (12)3 π£ = 1,278ππ3
La arista de un cubo mide 12cm. Calcular: a a a a
a=12cm a) La longitud de su diagonal. D
π =?
π
a
a
d
formula: π« = πβπ π· 2 = π2 + π 2
βπ·2 = βπ2 + π·2
π·2 = 122 + 122
π· = β122 + (β288)
π·2 = 144 + 144 βπ·2 = β288 π· = 16,97ππ
π· = β144 + 288 π· = β432 π· = 12β3 = 20,78ππ
b) El Γ‘rea lateral del cubo. Formula :π΄πΏ = 4 β π π΄πΏ = 4(12)2 π΄πΏ = 4 Γ 144 π΄πΏ = 576ππ2
2
2
c) El volumen del cubo. Formula: π = π3
π£ = (12)3 π£ = 1,278ππ3
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