Tristan wants to buy 12 cupcakes. each cupcake costs $2.40. what is the best estimate for how much money tristan should bring with him to pay for the cupcakes

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?