Section 1.8 Question 61 See attachment. Let me see. For part (a), I know that the area of a square is side squared or A = s^2, where s = x for this problem. I think the answer is r(x) = x^2. For part (b), the area of the circular base is pi•r^2. I think the answer is A(r) = pi•r^2. For part (c), I must find (A ° r)(x). I know that (A ° r)(x) = A(r(x)). I know that r(x) = x^2 from part (a). I conclude that A(r(x)) = A(x^2). If I am correct, how do I interpret A(x^2)? [ATTACH=full]225[/ATTACH]