The surface area of a right cone is given by finding the area of the base and the lateral area.
The lateral area is the area of a sector of a circle whose radius is the height of the cone.
An oblique cone is slanted. This means that the radius of the sector in one part would not be the same as the radius of the sector in another part. This means the formulas couldn't be the same.
Answer: First we multiply 80 by 3 which gives us 240, then we add the initial 80 that Joe has, which gives us a total of 320 video games. So, they have 320 video games in all.
