S = 2πrh is the formula for the surface area S of the curved surface of a cylinder having radius r and height h.You have a rectangular sheet of wrapping paper which has a length l and a width w.What is the radius of the largest-area cylinder having a height l that the wrapping paper will cover?

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The Answer of S = 2πrh is the formula for the surface area S of the curved surface of a cylinder having radius r and height h.You have a rectangular sheet of wrapping paper which has a length l and a width w.What is the radius of the largest-area cylinder having a height l that the wrapping paper will cover?

S = 2πrh Is the Formula for the Surface Area