Question

three metal cubes with edges 6cm ,8cm,10cm are melted together and formed into a new cube . find the volume of and the surface area of the new cube​

Answer 1

Answer:

Step-by-step explanation:

Volume remains same so,

Volume of new cube = v1+v2+v3

= 6³+8³+10³

=216+512+1000

=1728 cm³

Now volume of new cube = a³= 1728

Edge of new cube = a = cube root of 1728.

a= 12

Therefore surface area of new cube = 6a²

=6×12²

=6×12×12

=864 cm²