Question

If length of a diagonal of a cube is 12 3cm , find is total surface area

Answer 1

let the edge of cube be a

diagonal of a cube =√3a

√3a= 12√3

a= 12cm  

surface area of cube = 6a²

surface area = 6*12*12 = 864 cm^2

volume = a³

volume = 12*12*12 =1728cm^3