Setting V = π {\displaystyle V=\pi } ,
π x 2 y 3 = π x 2 y = 3 y = 3 x 2 {\displaystyle {\begin{aligned}{\frac {\pi x^{2}y}{3}}&=\pi \\x^{2}y&=3\\y&={\frac {3}{x^{2}}}\\\end{aligned}}}
We plot the equation y = 3 x 2 {\displaystyle y={\frac {3}{x^{2}}}} noting that x ≥ 0 {\displaystyle x\geq 0} is necessary for the curve to make physical sense.