A cylinder is a circular prism close circular prism (cylinder)A three-dimensional figure having two parallel bases that are circles equal in terms of radius, diameter, circumference and surface area ...

Explains the concepts of volume for various geometric solids, including prisms, pyramids, cylinders, cones, and spheres. It details the formulas used to calculate their volumes, emphasizing the ...

I always find this Siberian diamond mine to be quite impressive. According to Wikipedia, the Mir mine is 525 meters deep with a radius of 600 meters (at the top). It's not the largest excavated hole ...