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The length, breadth and height of a cuboid is 25 cm, 15 cm and 8cm respectively. Which one of the following is the surface area of the cuboid?

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390 cm²

1390 cm²

2780 cm²

1000 cm²

answer is B.

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Detailed Solution

Given that, length of cuboid,

l = 25 c m

, breadth of cuboid,

b = 15 c m

and height of cuboid,

h = 8 c m

.
Surface area of cuboid

= 2 l b + b h + h l

.
Substituting the value of length, breadth and height in the formula and simplifying,
Surface area of cuboid

= 2 25 × 15 + 15 × 8 + 8 × 25

Surface area of cuboid

= 2 375 + 120 + 200

Surface area of cuboid

= 2695

Surface area of cuboid

= 1390cm 2

Hence, the surface area of the cuboid is

1390cm 2

.
Therefore, option 2 is correct.

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The length, breadth and height of a cuboid is 25 cm, 15 cm and 8cm respectively. Which one of the following is the surface area of the cuboid?

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