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DanneManne · Answer 1 · 2019-09-21T05:27:42+0000

The surface area of the hat can be found using the formula A = 4
$\pi$ r.
Since the radius is half of the diameter you would divide the diameter by 2 to get a radius of 8. You then substitute r for 6 in the formula and get the surface area.
A = 4
$\pi$ 6
A = 804.25

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