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Cube surface area with side 3 equal to 54

Cube area calculation method:
Side a:

Cube

A cube (or hexahedron) is a regular polyhedron that consists of polygons that are squares.
Cube surface area formula Cube surface area formula On the side where a is the side of the cube

Solution:
S = 6a2
= 6·32
= 6·9
=
54

a: Cube surface area with side 3 equal to 54