I'm stuck on another problem I've got for class. Unfortunately, the book only covers 2D. I'm using SolidWorks 2014

The dimensions I'm using for the shape is a base that's 2in square, the whole thing is 2in tall, and the circle at the top has a radius of 1.5/pi

I tried just converting flat triangles to sheet metal then creating lofted bends from sketches, but it won't accept any kind of sketch I've done.

The end should not have a base nor top, so it's just one solid piece of walls