A box has length, breadth and height of 10 cm, 20 cm and 5 cm respectively. The lateral surface area of the box is

100 cm²

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200 cm²

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300 cm²

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400 cm²

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Solution

The correct option is C
300 cm²

Given:
$l = 10 c m, b = 20 c m a n d h = 5 c m$

The lateral surface area of cuboid
$= 2 h (l + b)$
$= 2 \times 5 (10 + 20)$
$= 300 c m^{2}$

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