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

$100 c m^{2}$

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$200 c m^{2}$

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$300 c m^{2}$

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$400 c m^{2}$

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Solution

The correct option is C
$300 c m^{2}$

Given that length, $l = 10 c m,$ breadth, $b = 20 c m$ and height, $h = 5 c m$

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

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