[填空题]
The area, A, of a gizzijkj8f - 1-*sb u)dxph hrv )1t9j6nv4 hvc732o1,mc zprhj-/nf io qxy.,n ven square can be represented by the function
A(P)=$\frac{P^2}{16}$,P≥0,
where P is the perimeter of the square.
The graph of the function 0≤P≤20, is shown below.
1.Find the value of A(20).
2.On the grid above, draw the graph of the inverse function, $A^{−1}$.
3.In the context of the question, explain the meaning of $A^{−1}$(4)=8.
