Archive for April, 2010

Christian Myers

April 16, 2010

In a real life situation you can use inscribing a figure in a circle to help inscribe a photo onto a circular key chain.  In this situation say you want a picture of your family on a key chain if you have it inscribed the picture can be whatever size and all you would have to do is take it to the shop have it inscribed and you would have key chain with your family photo.

Justin Sheldon

April 16, 2010

Area of a circle

The area of a circle is the number of square units inside the circle. You could use this if you worked at pizza hut and wanted to know how much toppings would fit on a certain pizza, also if you wanted to garnish food it would be helpful to know what to put on and how much.

Justin Sheldon

Derra Lusk

April 16, 2010

Circumference, diameter and radii are measured in linear units, such as inches and centimeters.  A circle has many different radii and many different diameters, each passing through the center.  A real-life example of a raduis is the spoke of a  bicycle wheel.  A 9 inch pizza is an example of a diameter:  When one makes the first cut to slice a round pizza pie in half, this cut is the diameter of the pizza.  So a 9 inch pizza has a 9 inch diameter.

Ethan Malmkar

April 16, 2010

You are an architect. You have been asked to help design the seating for a movie theater that is in a circular shape. You must design the seating so that all of the seats will provide an acceptable view of the screen. You will be given parameters for what constitutes an acceptable view. How can you make sure that every seat in the theater is correctly placed?  You will need to find the measure of the inscribed angle so that all the seating can see the screen completely.

Ashia Lum

April 16, 2010

The radius of a circle is the distance from the center of a circle to any point on the circle.  If you place two radii end to end in a circle, you would have the same length as one diameter.  Thus, the diameter of a circle is twice as long as the radius. 

Pi is the relationship fo the circumference of a circle to the diameter.  Thus for any circle, if you divide the circumference by the diameter, you get a value close to 3.14. 

When the pentagon was built the original figure was supposed to be a circel but they over estimated the area of the land to the circumference of the circle and ended up with a pentagon.

Lydia Lusk

April 16, 2010

A chord is a line segment that joins two pints on a curve.  In geometry, a chord is often used to describe a line segment joining two endpoints that lie on a circle.  The circle to the right contains chord AB.  If this circle was a pizza pie, you could cut off a piece of pizza along chord AB.  By cutting along chord AB, you are cutting off a segment of pizza that includes this chord.