The surface area of a box which is in the form of a cuboid whose dimensions are 1 - b - h is-A- 2 lb - bh - hl B- lb - bh - hlC- 2 lh - bh D- l h-b h

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Cube and Cuboid and Its Surface Areas

The surface a...

Question

The surface area of a box which is in the form of a cuboid whose dimensions are l $\times$ b $\times$ h is:

2(lb + bh + hl)

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lb + bh + hl

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2(lh + bh)

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lh + bh

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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 6 rectangular plates $(l, b), (b, h), (l, h), (l, b), (b, h), (l, h) .$

Total surface area $= l b + b h + l h + l b + b h + l h = 2 (l b + b h + h l)$

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The surface area of a box which is in the form of a cuboid whose dimensions are l × b × h is:

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 6 rectangular plates (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)

The surface area of a box which is in the form of a cuboid whose dimensions are l $\times$ b $\times$ h is:

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 6 rectangular plates $(l, b), (b, h), (l, h), (l, b), (b, h), (l, h) .$

Total surface area $= l b + b h + l h + l b + b h + l h = 2 (l b + b h + h l)$