Question a: a right cone has a radius of 3 ft and slant height 7 ft. the radius and slant height are both doubled. which of the following correctly describes the effect on the surface area?
1. the surface area is multiplied by 4.
2. the surface area is multiplied by 1/2.
3. the surface area is multiplied by 1/4.
4. the surface area is multiplied by 2.
question b: a right cone has a radius of 2 ft and slant height 5 ft. the radius and slant height are both multiplied by 1/4. which of the following correctly describes the effect on the surface area?
1. the surface area is multiplied by 16.
2. the surface area is multiplied by 8.
3. the surface area is multiplied by 1/16.
4. the surface area is multiplied by 1/8.