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October 23, 2014

October 23, 2014

Posted by **Tony** on Monday, March 11, 2013 at 1:59pm.

- Geometry -
**Steve**, Monday, March 11, 2013 at 2:44pmperimeter = 2r+rθ = 40

r = 40/(θ+2)

a = 1/2 r^2 θ = 800θ/(θ+2)^2

da/dθ = 800(θ-2)/(θ+2)^3

da/dθ = 0 when θ=2 for maximum area

Note that it doesn't really matter what p is; max area for a constant perimeter is when θ=2

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