Atriangle has a perimeter of 59cm if the three sides are n, 3n+4,4n-1, what is the length of each side?

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

Is a square always, sometimes, or never a parallelogram

Can someone me with my math problem pls my teacher is on my back about this