If total suface area of a cube is s unit and the leght of its diagonal is d unit, then the raltion between s and d is

Options

A. `s= 6d^2`
B. `3s = 7d `
C. `S^3 =d^2`
D. `d^2 = s/2 `

Explanation

If the leght of equal sides of the cube be a units then ` s= 6a^2 " and " d = sqrt(3a)`
`rArr a = d/sqrt(3) rArr a^2 = d^2/3 `
`therefore s=6 xx d^2/3 rArr s =2d^2 = s/2 `