My comment in Marsigit's blogs about cylinder, cone, and sphere:
"I know this blogs discuss about mathematics for junior high school. But this matter too part of university student. In this blog Dr. Marsigit written learn destination well. Although nothing picture in there, but Dr. Marsigit can giving description with chapter about cylinder, cone, and sphere. Anything else with the example that more than easy to understand and know about cylinder, cone, and sphere. Along with to complete practice can measure how as many as understand student about cylinder, cone, and sphere.
Thank you Dr. Marsigit….. "