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October 21, 2014

October 21, 2014

Posted by **Anonymous** on Sunday, November 3, 2013 at 10:35am.

(a) How much wire should be used for the square in order to maximize the total area?

- calculus -
**Steve**, Sunday, November 3, 2013 at 11:48amIf x is allocated to the square, that leaves 18-x for the circle. So,

r = (18-x)/2π

a = π((18-x)/2π)^2 + (x/4)^2

= (1/4π + 1/16)x^2 - 9/π x + 81/π

now just set da/dx=0 and solve for x

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