Verified answer

4√5 = 8.94, Just put it in a calculator

If you mean the 4th root of √5 then = 1.49

On a graphing calculator press "4" "MATH" "5" and then enter 5.

√80.

I multiplied the outside,4, by itself with a radical. Then I multiplied the √16√5 to get √80

you do the square root of 5 which is 2.23606798. then you multiply 2.23606798 by 4 and get 8.94427192. you can round 8.94427192 to 8.94 so the answer is 8.94