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Question -

If the perimeter of each face of a cube is 32 cm, find its lateral surface area. Note that four faces which meet the base of a cube are called its lateral faces.



Answer -

Perimeterof each face of a cube = 32 cm
∴ Lengthof edge = 32/4 =8 cm
and lateral surface area of the cube = 4 x (side)2
= 4 x 8 x 8 = 256 cm2

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