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14-04-2017
Mathematics

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A sphere has a radius of 3x+2. What polynomial in standard form best describes the total surface area of the sphere? S=4πr^2

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14-04-2017

SA=4pir^2
r=(3x+2)
SA=4pi(3x+2)^2
SA=4pi(9x²+12x+4)
SA=pi(36x²+48x+16)
SA=36pix²+48pix+16pi
dat is de poly

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