2 cubed is 8, but the question asked for the sum of 2 cubed. Is there another part of the question.

2 cubed is the same as 2 to the third power = 2x2x2 = 8

The difference between 20 and 6 is 14, and the square root of 14 is an irrational number between 3 and 4.

Double check the question

2 cubed is the same as 2 to the third power = 2x2x2 = 8

The difference between 20 and 6 is 14, and the square root of 14 is an irrational number between 3 and 4.

Double check the question