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Question

A cuboid has total surface area of 40 m2 and lateral surface area of 26 m2. Find the area of it base.

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Solution

Surface area of top and bottom face of cuboid = Total surface area of cuboid - lateral surface area of cuboid
= 40-26 = 14 m2
We know that the area of top and bottom face of a cuboid are equal.
So, area of base = 142=7 m2

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