The marked price of a stove was $520. A worker bought the stove on hire purchase by making a down payment of $100, and twelve monthly payments of $40 each. How much could she have saved if she had bought the stove for the marked price?

A) $40
B) $60
C) $100
D) $140​

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?