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lofi

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Registered: 2016-08-10

Posts: 3

AMC Help Now!!

The circle is inscribed in a square with sides 8 cm. What is the area of the shaded part in square centimeters? Express your answer in terms of pi?

zetafunc

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Registered: 2014-05-21

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Re: AMC Help Now!!

What's the shaded part?

lofi

Member

Registered: 2016-08-10

Posts: 3

Re: AMC Help Now!!

http://www.artofproblemsolving.com/class/1169-mathcounts-basics/homework/10
This website has the picture
I dont think the website is working

The fifth term of an arithmetic sequence is 9 and the 32nd term is -84. What is the 23rd term?

Last edited by lofi (2016-08-10 10:21:58)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: AMC Help Now!!

The picture is only for people who are enrolled in the class, copy it and paste it in here.

The fifth term of an arithmetic sequence is 9 and the 32nd term is -84. What is the 23rd term?

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thickhead

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Registered: 2016-04-16

Posts: 1,086

Re: AMC Help Now!!

The fifth term of an arithmetic sequence is 9 and the 32nd term is -84. What is the 23rd term?

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{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}
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Bob

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Re: AMC Help Now!!

hi lofi

Welcome to the forum.

The circle is inscribed in a square with sides 8 cm. What is the area of the shaded part in square centimeters? Express your answer in terms of pi?

I think I can help here without the diagram.

You have a square 8 by 8 so its area is 64.

The circle fits inside so that it just touches the sides of the square.  So its diameter is 8 and so radius 4.  area = pi x 4squared.

I'm guessing the shaded bit is the part inside the square but outside the circle.

So subtract the second area from the first.

Bob

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