Question

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Question---2 cubes each of volume 64 cm3 are joined end to end. Find the surface area of the resulting cuboid??​

Answer 1

Step-by-step explanation:

Let the side of one cube = a

Surfaces area of resulting cuboid = 2(Total surface area of a cube) – 2(area of single surface)

We know that,

Total surface area of cube = 6a² , where a = side of cube

⇒ Surfaces area of resulting cuboid = 2(6a²) – 2(a²) = 10a²

Also, According to the question,

Volume of cube = 64 cm³

Volume of cube = a³

64 = a³

a = 4 cm

Therefore, Surface area of resulting cuboid = 10a² = 10(4)2 = 160 cm²

Answer 2

Answer:

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