Question

Three cubes of sides 6 cm, 8 cm and 1 cm are melted to form a new cube. The surface area of the new cube is:‐

Answer 1

Answer:

area = 486cm²

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Volume of first cube= 1 to the power cube= 1 cm cube

Volume of second cube= 6 to the power cube= 216 cm cube

Volume of third cube= 8 to the power cube= 512 cm cube

Then Volume of bigger cube= 512+1+216= 729 cm square

So, side of bigger cube=

$3 \sqrt{729}$

= 9 cm.

Therefore, Surface area of cube= 6*a square= 6*9*9= 486 cm square.

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