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"If an exterior angle of a regular polygon is \\( 36 ^ { \\circ } \\) and of its longest diagonals is 10 centimeters,\nthen its perimeter is equal to (in \\( \\mathrm { cm } \\) )\nO 100 sin \\( 18 ^ { \\circ } \\)\nO \\( 100 \\mathrm { sin } 36 ^ { \\circ } \\)"

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