The length of the segment indicated round your answer to the nearest 10th if nessesary

Which of the following is the true for f(x) = 5cos

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

Ineed here’s a picture of the question