Three cubes With edges 6 cm each are joined end to end to form a cuboid The total surface area of th...........

Quantitative Aptitude (CPO) Mensuration 2D

Three cubes With edges 6 cm each are joined end to end to form a cuboid. The total surface area of the cuboid is:

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SSC CPO 14th-March-2019-Shift-1

432 cm²

504 cm²

648 cm²

720 cm²

- Each cube has sides of 6 cm.

- When three cubes are placed end to end, they form a cuboid.

- The dimensions of the cuboid are: length = 18 cm (3 × 6 cm), width = 6 cm, height = 6 cm.

- Surface area of a cuboid is calculated as: 2(lw + lh + wh).

- Substitute the dimensions: $$2(18 \times 6 + 18 \times 6 + 6 \times 6)$$.

- Calculate:

- $18 \times 6 = 108$

- $6 \times 6 = 36$

- Total: $2(108 + 108 + 36) = 2 \times 252 = 504\;cm^2$.

Option:2, 504 cm² is correct.

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