La casilla es igual a "él número formado por las medidas de los cuadrados no mayores colocados en orden ascendente, al número formado obtén la mitad y el resultado resta 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

I'm confused on this could anyone me and show me what i need to do to solve it.

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line