You can do 90 sit-ups in 2 minutes. Your friend can do 135 sit-ups in 3 minutes. Who does the most situ-ps per minute? How many more sit-ups does that person do compared to the other one?

Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?