Homework Help: math

Posted by olivia on Thursday, December 11, 2008 at 9:53pm.

find the area of this ring to the nearest square unit. Show your work.
The image shows a ring, the inside raius is 2.0m, and the outside radius is 3.2m. The area of the ring is...
plz help!! thx.

math - Ms. Sue, Thursday, December 11, 2008 at 10:08pm
First, let's get the outside area.

A = pi * r^2
A = 3.14 * 10.24
A = 32.1536

Now, the inside area:

A = 3.14 * 2^2
A = 12.56

Subtract:

32.1536 - 12.56 = ?
- math - olivia, Thursday, December 11, 2008 at 10:08pm
  wow. ur really good! =) thank you!
  - math - Ms. Sue, Thursday, December 11, 2008 at 10:10pm
    You're welcome. :-)

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