The square root of 68ac^3 divided by the square root of 27a^2
68ac^3 divided by the square root of 27a^2
√ [ 68ac^3] / √[27a^2] .... we have
√[68/27] * √[a/a^2] *√c^3 =
(4/3) √(17/3) * √[a/a^2] *√c^3 =
(4/3) √(17/[3a]) * c√c =
(4c/3)√(17c/[3a])