If a =2b and b=4c then `3sqrt(a^(4))/(16bc)`=

If a=2b and b=4c, then root3(a^(2)/(16bc))= ____ .

If a =2b and b=4c then ((a^(1/4))/(16bc))^(1/2) =

If a:b=4:5 and b:c=2:3, then a:c=

If 3a=4b=6c and a+b+c=27sqrt(29) then sqrt(a^(2)+b^(2)+c^(2)) is (a) 3sqrt(29) (b) 81 (c) 87 (d) None of these

If a:b = 2:3 and b:c = 3:4, then a:c = _____.