Learn About Circles & Find Radius

[thomas576]

circles... and pie

ok so i found this site and I am learning about circles now :) http://www.mathgoodies.com/lessons/vol2/circumference.html

it says pie is 3.14 which is what you get when you divide the outer measurement of the circle by the diameter (pie being 3.14 as per his homework)

c/d=3.14 the question reads
in this problem i have used & to mean pie because i don't know how to make that symbol
circumference of a circle is 6&
find the radius...

so

6&/d=&

6(3.14)/d=3.14
18.84/d=3.14
18.84=3.14d
18.84/3.14=d
6=d
diameter is 2x radius so raidus is 3

sound right?
thanks again guys and gals!

 

[whozum]

Its right.

You couldve saved some time by dividing both sides by pi in the first step

 

[theCandyman]

Just for reference, it is written pi. You can get the pi symbol by using LaTeX code. You write tex or itex in brackets and close them with /tex or /itex in brackets. Write \pi inbetween the code to get the symbol to show up.

Like this: $$\pi$$, click the symbol to see the code to write it.

 

[Ouabache]

in this problem i have used & to mean pie because i don't know how to make that symbol circumference of a circle is 6&

I like pie :tongue2: However, I believe you are referring to the mathematical constant which whozum correctly spelled pi ..

If you want to make the symbol $$\pi$$ click on the one I made and a popup window will show the syntax you can use, to create it)

(while I was writing this, i see Candyman has a similar suggestion, I wonder if he/she also likes pie :tongue2: )

 

[FredGarvin]

mmmmm...pie...

 

[arildno]

mmmmm...pie...

You are too late, Fred. I sneaked up on it all unnoticed yesterday.
You're welcome to the left-overs, however