¿Cual es el área (superficie) total de un cubo de aristas igual a 7 cm?
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Tenemos.
arista(a) = 7cm
Si es el area lateral
al = 4 * a²
al = 4 * 7cm * 7cm
al = 196cm²
El area lateral del cubo es de 196cm²
Area total.
at = 6 * a²
at = 6 * 7cm * 7cm
at = 294cm²
El area total del cubo es de 294cm²