Question
The surface area of a box which is in the form of a cuboid whose dimensions are
l x b x h is:
The surface area of a box which is in the form of a cuboid whose dimensions are
l x b x h is:
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Solution
The correct option is A 2(lb + bh + hl)
The surface area of a cuboid is nothing but the total surface area which is the area of the 6 rectangular faces {(l,b), (b,h), (l,h), (l,b), (b,h), (l,h)}.
Total surface area = lb + bh + lh + lb + bh + lh = 2(lb + bh + hl)
2(lb + bh + hl)
The surface area of a cuboid is nothing but the total surface area which is the area of the 6 rectangular faces {(l,b), (b,h), (l,h), (l,b), (b,h), (l,h)}.
Total surface area = lb + bh + lh + lb + bh + lh = 2(lb + bh + hl)
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