csat-suneung· South-Korea· csat__math-science3 marks
The region enclosed by the curve $y = \frac { 1 } { 4 } x ^ { 2 }$ and the line $y = 4$ is rotated around the $y$-axis. If the volume of the solid of revolution is $k \pi$, find the value of the constant $k$. [3 points]
The region enclosed by the curve $y = \frac { 1 } { 4 } x ^ { 2 }$ and the line $y = 4$ is rotated around the $y$-axis. If the volume of the solid of revolution is $k \pi$, find the value of the constant $k$. [3 points]