Question

$8 \sqrt{3 + 6 + 3 \sqrt{5 + 4 \sqrt{3 + 16 + 7 \sqrt{5} } } }$
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Answer 1

65.1452894658

$8 \sqrt{ 3 + 6 + 3} \sqrt{5 + 4} \sqrt{3 + 16 + 7} \sqrt{5} = 65.1452894658$