1. The problem statement, all variables and given/known data A circle of radius 7 inches is sliced vertically, parallel to the y-axis, into three pieces. Each piece has an equal area. What is the width, x-axis, of each piece? 2. Relevant equations f(x)= +/- sqrt((r^2)-(x^2)) where "r" is the radius. 3. The attempt at a solution My sign for the integral is $ Using the equation for a circle above I took advantage of the obvious symmetry about the x-axis to isolate the part of the circle above the x-axis relevant to the given radius. g(x)= sqrt((7^2)-(x^2)). My attempt was to first define the area as an integral from the origin until x=7. (I chose x=7 because of the symmetry about the y-axis.) I(x)= 0->7 $sqrt((7^2)-(x^2))dx Here is where I hit a wall. The prof tried explaining to the class about Pythagoras and I thought I understood but apparently I didn't. Any assistance or pushes in the right direction would be greatly appreciated.