π ∫ 0 1 [ ( 1 ) 2 − ( y 2 ) 2 ] d y {\displaystyle \pi \int _{0}^{1}\left[(1)^{2}-(y^{2})^{2}\right]dy}
![{\displaystyle \pi \int _{0}^{1}\left[(1)^{2}-(y^{2})^{2}\right]dy}](https://en.wikipedia.org/api/rest_v1/media/math/render/svg/f368d0c2a9e6f0fc33c1b0d6325e9378e51952d3)