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Math Fun #843849
10/21/12 04:16 PM
10/21/12 04:16 PM
Joined: Aug 2000
Posts: 52,940
Upstate NY
Pandora Offline OP
Sonic Boomer
Pandora  Offline OP
Sonic Boomer

Joined: Aug 2000
Posts: 52,940
Upstate NY
The area of EOF is a quarter of a circle with point O at the center of the circle. The line segment AC is 8 inches long and the line segment BC is 6 inches long.

How many square inches are in the shaded areas?





Netflix needs to stop asking if I'm still watching and start asking if I've switched the laundry over yet
Re: Math Fun [Re: Pandora] #843851
10/21/12 04:32 PM
10/21/12 04:32 PM
Joined: Nov 2004
Posts: 21,812
Bucks, England
Urban Worrier Offline
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Urban Worrier  Offline
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Joined: Nov 2004
Posts: 21,812
Bucks, England
By Pythagoeas, OC = 10, therefore area of circle is 100*pi and area of quadricircle(?) OEF is 25*pi.

Hopefully this gives shaded area as 25*pi-48 = 30.5 approx think


To waste one second of one's life is a betrayal of one's self.
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Re: Math Fun [Re: Pandora] #843858
10/21/12 05:01 PM
10/21/12 05:01 PM
Joined: Aug 2000
Posts: 52,940
Upstate NY
Pandora Offline OP
Sonic Boomer
Pandora  Offline OP
Sonic Boomer

Joined: Aug 2000
Posts: 52,940
Upstate NY
Well done, Rog! smile smile smile


Netflix needs to stop asking if I'm still watching and start asking if I've switched the laundry over yet
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