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  • AP:what is the radius of a cylindrical soda can with volume of 512 cubic inches that will use

    AP:what is the radius of a cylindrical soda can with volume of 512 cubic inches that will use
    what is the radius of a cylindrical soda can with volume of 512 cubic inches that will use the minimum material?
    英語人氣:575 ℃時(shí)間:2020-01-19 23:59:36
    優(yōu)質(zhì)解答
    V = pi*r^2*h = 512A = 2*pi*r*h + 2*pi*r^2h = 512/(pi*r^2)A = 2*pi*r*512/(pi*r^2) + 2*pi*r^2 = 1024/r + 2*pi*r^2dA/dr = -1024/r^2 + 4*pi*r = 0r = 4.3554 還是要英文翻譯?
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