Question

The metal cubes if side 5cm ,4cm and 3cm are melted an recast into a cube .find edge of new cube so formed.

Answer 1

sides of cubes are 5cm, 4cm and 3cm
sum of volume of small cubes= volume of big cubes
5^3 +4^3 + 3^3 = a^3
125 + 64 + 27= a^3
216 = a^3
a = 6cm
edge of new cube is 6cm

Answer 2

Answer:

6 cm

Step-by-step explanation:

volume of cube 1 =5*5*5=125

volume of cube 2 =4*4*4=64

volume of cube 3 =3*3*3=27

volume of new cube =125+64+27=216

edge of new cube = cube root of 216 = 6