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Mathematics 11 Online
OpenStudy (anonymous):

The surface area of a cylindrical can of radius r and height h is 2πr2 + 2πrh. If the can is three times as high as the radius of its top, express its surface area S as a function of r.

OpenStudy (anonymous):

If i could have help with another, :Determine whether the equation defines y as a function of x or defines x as a function of y. y2 = 8x + 2

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