X opt = 2 ⋅ M ⋅ a b ⋅ p {\displaystyle X{\text{opt}}={\sqrt {\frac {2\cdot M\cdot a}{b\cdot p}}}}
X opt = 2 ⋅ 200 ⋅ 100 10 ⋅ 0 , 12 {\displaystyle X{\text{opt}}={\sqrt {\frac {2\cdot 200\cdot 100}{10\cdot 0{,}12}}}}