Question

Three cubes of metal whose edges are 6 cm, 8 cm and 10 cm respectively are melted to form a single cube. Find The edge of the new cube.

Answer 1

hey dude ur answer is here.............--
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volume remains same so 
volume of new cube = v1+v2+v3
= 6^3+8^3+10^3
=216+512+1000
=1728
now volume of new cube = a^3= 1728

edge of new cube = a= cube root of 1728

a= 12

therefore surface area of new cube = 6 a^2
=6×12^2
=6×12×12
=864 square cm.

thanks......!

Answer 2

Answer:

Step-by-step explanation:

Given cubes of side lengths 6 cm, 8 cm, 10 cm.

Volume remains same so volume of new cube = sum of volumes of three cubes= v1+v2+v3

=6 cube +8 cube

+10 cube

=216+512+1000

=1728

Now volume of new cube =a cube

=1728=(12) cube

Edge of new cube =a=12.