Two cubes of edge \( 8 \mathrm{~cm} \) are joined to form a cuboid. Find the total surface area ...

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Two cubes of edge \( 8 \mathrm{~cm} \) are joined to form a cuboid. Find the total surface area of the cuboid.
\( \mathrm{P} \)
(1) \( 640 \mathrm{~cm} \)
(2) \( 640 \mathrm{~cm}^{2} \)
(3) \( 770 \mathrm{~cm}^{2} \)
(4) \( 340 \mathrm{~cm}^{2} \)
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