Considerando que 1 jarda valha aproximadamente 90 cm, 270 km vale:

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

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )

What is the exact volume of the cone? (height is 9 cm, the radius is 15 cm)