Write the lateral surface area of a cuboid having length $l$ units, breadth $b$ units and height $h$ units.

2 (l + b) h

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2 (l + h) b

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3 (l + b) h

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2 (h + b) l

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Solution

The correct option is A $2 (l + b) h$
To find the lateral surface area of the cuboid, we need to add the area of each lateral side.
Two sides will have the dimensions $b$ and $h$ .
Other two sides will have the dimensions, $l$ and $h$ .
Each wall is in the shape of a rectangle.
Hence, Lateral surface area of the cuboid $= 2 (b \times h) + 2 (l \times h) = 2 (l + b) h$

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Write the lateral surface area of a cuboid having length l units, breadth b units and height h units.

Write the lateral surface area of a cuboid having length $l$ units, breadth $b$ units and height $h$ units.