If the sides of a cube are in the ratio 9:7. What is the ratio of their diagonals? Options
A) 4 : 3	B) 16 : 9	C) 9 : 7	D) 3 : 4	E) 3 : 8

Rationale: "explanation : diagonal of a cube = a √ 3 where a is side a 1 : a 2 = 9 : 7 d 1 : d 2 = 9 : 7 where √ 3 cancelled both side answer : c"
Answer: C