Name: ______________________________________  Subject: _______________________ Date: _______

Write on the right side what is missing.

   1. Cylinder parts

    In the picture, we see several examples of cylinders: an oil drum, a drum, a pencil and a flashlight.
    The cylinder has two bases that are two circles and a height which is the perpendicular between the two bases: the side.

    AB side is called generatrix because when it turns on the axis O'O creates the lateral surface of the cylinder.
    Look at this figure and answer:
 

    2. - Lateral area of the cylinder

   If we cut the surface of a cylinder by a generatrix and we extend it on a plane, we obtain a rectangle whose base is the length of the circumference of the cylinder base (2 x p x r) and the height is its generatrix. Lateral Area = 2 x p x r x g.
    The lateral area of a cylinder is equal to the product of the length of the circumference of the base by the generatrix or height.

    Para hallar el área total se suma al área lateral el área de las dos bases. El área de círculo es: p x r²
        Surface area = ( 2 x p x r x g ) + ( 2 x p x r^{2 ).} 

    Do these problems on a paper and answer:

    3. Volume of the cylinder

   Remember that the volume of a prism is the product of the surface of the base times the height.
    The volume of the cylinder is the product of the area of the circle times the height.
    The area of the circle is  p x r²  . The volume of the cylinder is  p x r² x height.

    Do these problems on a paper and answer: