Getting students to make a connection to finding the circumference of a circle.
2007-04-14 13:46:41 · 3 answers · asked by Deborah B 1 in Science & Mathematics ➔ Mathematics
Here's one connection. Suppose one was wanting to buy flexible baseboard for a circular room. Don't laugh! Despite being rare, they do exist. One would have to know the circumference of the room less any doorways, windows or other openings which might subtract from its length in order to buy the correct length of baseboard. Similar problems are encountered when figuring how much material to buy when enclosing a circular flower bed with edging materials, or buying materials to cover a floor. Knowing the circumference of a circular room then lets one figure its area [A = π(C/2π)²] in order to buy the right quantity of flooring materials.
2007-04-14 14:07:07 · answer #1 · answered by MathBioMajor 7 · 0⤊ 0⤋
Maybe if you sell circular irrigation systems it would be useful. ;-)
But, I think it's just an interest fact to know that the ratio between the diameter and circumference of a circle is the same irrational number for all circles. (pi)
2007-04-14 13:56:11 · answer #2 · answered by bz2hcy 3 · 0⤊ 0⤋
I found bz2hcy's answer to be "pivotal" to this subject.
2007-04-14 14:08:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋