Question

Three solid cubes of sides 1 cm, 6 cm and
8 cm are melted to form anew cube. Find the
surface area of the cube so formed.​

Answer 1

Answer:

10384

Step-by-step explanation:

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Answer 2

Answer: 486 sqcm

Step-by-step explanation:

Volume of new cube = total volume of all 3 cubes

Volume of new cube = (1*1*1) + (6*6*6*) + (8*8*8)

= 1+216+512

= 729

Volume of new cube = 729

a^3=729

a=9

Surface area of new cube= 6a^2

= 6*9*9

=486 Sqcm