Posts Tagged ‘Lauren Wagner’

Lauren Wagner

May 17, 2010

Suppose a water tank in the shape of a right circular cylinder is thiry feet long and eight feet in diameter.  How much sheet metal was used in its construction?  This is an exampleo f a real life application for finding the surface are of a cylinder.  Anyone from a lumber to a painter would need ot know the formula.  A painter would need the formula so that they can decide how much paint they need to get if they are painting an object in the shape of a cylinder. 

Also, someone who makes toys would need to know how much material is needed if they were making an object in the shape of a cylinder.  Surface area can also be used if you are trying to find out how much wrapping paper to wrap a gift.  Surface area is used for many things rom gifts to plumbing.

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Lauren Wagner

November 17, 2009

There are not very many jobs where you would have to know the exact distance

from a point to a line. A job where you would use that is if you make cd’s.

This job would be very difficult trying to get the EXACT distance. They also

use this theorem a lot to make gaming programs.

There also are a number of 3D geometric construction techniques that require a coordinate system perpendicular to a line segment, some examples are:

  • Creating a disk given its center, radius and normal.

  • Forming a cylinder given its two end points and radii at each end.

  • Creating a plane coordinate system perpendicular to a line.