Verified Answer :

\(6.2 = 1.2\pi\sqrt{L(0.0001)}\)
\(\frac{6.2}{1.2\pi} = \frac{1.2\pi\sqrt{L(0.0001)}}{1.2\pi}\)
\(1.644601079 = \sqrt{L(0.0001)}\)
\((1.644601079)^{2} = (\sqrt{L(0.0001)})^{2}\)
\(2.704712708 = L(0.0001)\)
\(\frac{2.704712708}{0.0001} = \frac{L(0.0001)}{0.0001}\)
\(27047127.08 = L\)

I had to divide each number by 1.2π, make sure that it can be multiplied by itself twice, and have to divide it by 0.0001 to find out what L is equal to.