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6 May, 14:08

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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  1. 6 May, 15:01
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    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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