Answer:
5ft 11in
Explanation:
We know that 1 feet is equivalent to 12 inches ⇒
(I)
We need to convert the measure 5.89 feet.
5.89 feet is equivalent to 5 feet + 0.89 feet
We need to convert the remaining 0.89 feet into inches.
Using the equivalence (I) :

≅ 11 inches
We can write that
5.89 feet = 5 feet + 0.89 feet = 5 feet + 11 inches ⇒
5.89 feet = 5ft 11in