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April 23, 2014

April 23, 2014

Posted by **HanuMath25/11** on Sunday, November 25, 2012 at 6:13pm.

- Geomatric series -
**Reiny**, Sunday, November 25, 2012 at 9:03pmarea = π(8)^2 + π(4)^2 + π(2)^2 + π(1)^2 + π(.5)^2

= 64π + 16π + 4π + π + (1/4)π

this is a GS where a = 64π and r = 1/4

but , rather than using the formula in this case it is just as easy to just add them up

total = 85.25π

check:

area = 64π( 1 - (1/4)^5)/(3/4) = 85.25π

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