Question : The length, breadth, and height of a cuboid are 4 cm, 6 cm, and 10 cm respectively. Find the total surface area.
Option 1: $248\ \text{cm}^2$
Option 2: $244\ \text{cm}^2$
Option 3: $144\ \text{cm}^2$
Option 4: $222\ \text{cm}^2$
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Correct Answer: $248\ \text{cm}^2$
Solution : Given: The length, breadth, and height of a cuboid are 4 cm, 6 cm, and 10 cm respectively. The total surface area of the cuboid of the length $l$, breadth $b$, and height $h$ $=2(lb+bh+lh)$. $=2(4\times 6+6\times 10+10\times 4)$ $=2(24+60+40)$ $=2\times 124 = 248 \ \text{cm}^2$ Hence, the correct answer is $248\ \text{cm}^2$.
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