Final answer:
The formula for the function s=f(A) is s = √(A/6).
Step-by-step explanation:
To find the formula for the function s=f(A), we need to solve the surface area formula for s.
The surface area formula for a cube is A=6s².
To solve for s, divide both sides of the equation by 6: s² = A/6.
Then, take the square root of both sides to get the formula s = √(A/6).