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September 21, 2014

September 21, 2014

Posted by **Jessica** on Wednesday, June 1, 2011 at 1:18am.

- Math -
**Mgraph**, Wednesday, June 1, 2011 at 3:21amSurface Area=Base Area+Lateral Area

SA=BA+LA

The side of the octagon

a=2*apothem*tan(45/2)

BA=0.5*8a*apothem=8*apothem^2*tan(45/2)

LA=4a*(slant height)

slant height=sqrt(height^2+apothem^2)

tan(45/2)=0.4142

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