area, perimeter and units

turkmath · #1 $Old$ 11-06-2008, 06:08 PM

if we have a circle with perimeter 30 cm, how many cm^2(exactly) are in the circle area? in other words, how many square units(cm^2)(but exactly) are there, if i were count them?
Thanks for your supports and sorry for my languages...

Nacho · #2 $Old$ 11-06-2008, 07:00 PM

turkmath · #3 $Old$ 11-07-2008, 11:37 AM

Quote:

Originally Posted by Nacho $View Post$

$2\pi r = 30 \Leftrightarrow r = \frac{{30}}{{2\pi }} \Rightarrow A_ \odot = \pi \left( {\frac{{30}}{{2\pi }}} \right)^2$

thanks but u calculate circle area. i want to count only exact square units(not semi-square or another) in the circle area...i hope i can explain the problem correctly....

HallsofIvy · #4 $Old$ 11-07-2008, 12:07 PM

Quote:

Originally Posted by turkmath $View Post$

thanks but u calculate circle area. i want to count only exact square units(not semi-square or another) in the circle area...i hope i can explain the problem correctly....

Do you mean how many actual squares, 1 cm on a side, can be put into the circle without overlapping?

turkmath · #5 $Old$ 11-07-2008, 12:20 PM

Quote:

Originally Posted by HallsofIvy $View Post$

Do you mean how many actual squares, 1 cm on a side, can be put into the circle without overlapping?

totally yes, yes...this is true question and good meaning...

turkmath · #6 $Old$ 11-08-2008, 01:20 PM

is it complicate or advanced question?

turkmath · #7 $Old$ 11-11-2008, 05:22 PM

pls help, thanks for your supports...

turkmath · #8 $Old$ 11-23-2008, 04:58 PM

it is still unsolved...

Can i use any math software for solving this problem?Thanks for your comments...