Question

There cubes of metal edges are 6cm, 8cm & 10cm are melted & one new cube is

made. Find the total surface area of new cube.​

Answer 1

Answer:

864cm^2

Step-by-step explanation:

a^3 + a^3 + a^3 = new volume

6^3 + 8^3 + 10^3 = new volume

216 + 512 + 1000 = 1728

a^3 = 1728

a = 12

TSA ( total surface area) = 6a^2

                                         = 6*12*12

                                          = 864cm^2

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