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A closed cylindrical tank of radius 7 m ...

A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is required?

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To find out how much sheet metal is required to make a closed cylindrical tank, we need to calculate the total surface area of the cylinder. The formula for the total surface area \( A \) of a closed cylinder is given by: \[ A = 2\pi r(h + r) \] where: - \( r \) is the radius of the base of the cylinder, ...
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