Question

the total surface area of a cube 54 centimetre square what is the length of its sides

Answer 1

Let the side of cube be a cm
According to question
6a^2 = 54
a^2 =9
Side =3cm

Answer 2

area of cube =6a..sq..
therefore,
54 = 6 a..sq
54 divide by 6=a .sq
9=a..sq
so......a=3