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June 20th, 2011, 11:37 AM   #1
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I'm a parent going back to school part 2

Can someone break this simple math down for me? It's been a long time since I was in school.

The area of a circle with a diameter of 240mm is:

The multiple choice answers are cm2.
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June 20th, 2011, 11:46 AM   #2
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Re: I'm a parent going back to school part 2

I have the answer key because I'm studying for a placement exam; the answer is 452.16cm2 and I was just wondering how you get that answer.
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June 20th, 2011, 12:47 PM   #3
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Re: I'm a parent going back to school part 2

Figured it out on my own, thanks anyways.
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June 20th, 2011, 01:02 PM   #4
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Since ? isn't exactly 3.14, that's not quite right. The area is ?d/4, where d is the diameter.
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June 21st, 2011, 01:27 PM   #5
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Re: I'm a parent going back to school part 2

Quote:
Originally Posted by newphorik
Can someone break this simple math down for me? It's been along time since I was in school.

The area of a circle with a diameter of 240mm is:

The multiple choice answers are cm2.
Don't feel bad... math is something you have to love and enjoy doing. For me I have to enjoy doing it because it's a crucial part of my career.
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