A roof is made of half cylinder with open base with surface area is . Estimate the length of roof.
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What Is the Formula for the Surface Area of the Half-Cylinder? The general formula for the total surface area of a half-cylinder is given as, Total surface area of half-cylinder = πrh + πr2 + 2rh, where "r" is the radius, and "h" is the height of the cylinder.
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