P-please. Help me with question 12

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

Write the expression 7x^3-28xy^2 as the product of 3 factors

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?