Consider the region in the plane enclosed by y = x^2 and y = 4.

a) Compute it's perimeter P and area A, and the ratio Q = A / P^2. (By squaring the perimeter we make this ratio independent of the unit length chosen to measure the region.)

b) Compare this ratio Q = A / P^2 among four different figures: the region in a), a square, a circle, and an equilateral triangle.

I found the area to be 16...... Not sure if that is correct. But I can't seem to figure out the perimeter. The rest seems to be comparing these #'s in different fashions, and using different shapes to compare your result to. Can someone help me out. TIA!!!