7.4


 * Surface Area and Volume of Cylinders

Cylinder:** A solid that consists of a circular area and its translated image on a parallel plane with a lateral face connecting both circles

This is made up of two cylinders, one is the handle and the other is the actual weapon


 * Axis:** The segment joining the center of the two bases

S = 2(pi)rh + 2(pi)r²
 * Surface are of a right cylinder:** S = L + 2B
 * Volume of a cylinder:** V = BhV + (pi)r²h

[|(full site of where I got this picture)]
 * Uses of cylinders:** Cylinders can make turrets of buildings, and silo's for barns.[[image:bmw_building_2319.jpg width="473" height="551" link="http://www.bigfoto.com/sites/galery/munich/bmw_building.jpg"]]