Two cubes of sides 6 cm each are kept side to form a rectangular parallelepiped. The area (in sq. cm) of the whole surface of the rectangular parallelepiped is

Explanation:

Whole surface area of cuboid

= 2(whole surface area of cube) – 2 × area of one face

(∴ two faces of the two cubes are not visible now)

⇒Required area=12a^2−2a^2=10a^2

=10×6^2=360cm^2