Question 855942
One problem is a squared plus 6 squared equals 12 squared.
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I'll assume you want to solve for a
{{{a^2 + 6^2 = 12^2}}}
{{{a^2 + 36 = 144}}}
{{{a^2 = 108}}}
{{{a = sqrt(108)}}}
a =~ 10.3923