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Question

The lateral surface area of a cube of side a is ______ .

A
4a2
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B
12a2
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C
2a2
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D
6a2
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Solution

The correct option is A 4a2
Lateral surface area of a cube is the sum of areas of 4 of its faces, excluding the areas of top and bottom faces.
The area of each face of a cube of side 'a' is a2.
The sum of areas of 4 faces = 4a2
Lateral surface area of a cube of side 'a' is equal to 4a2 .

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