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What is the surface area of a box whose length, breadth and height are $12 cm, 8 cm$ and $5 cm$ respectively?

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392 cm 2

390 cm 2

382 cm 2

397 cm 2

answer is A.

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Detailed Solution

Given-

l = 12 c m b = 8 c m h = 5 c m

T . S . A = 2 (l b + b h + h l) = 2 (12 (8) + 8 (5) + 12 (5)) = 2 (196) = 392 cm 2

Thus, the total surface area is

392 cm 2

.
Hence, option 1 is the correct option.

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