Answer:
1. True
2. False
3. False
4. False
Step-by-step explanation:
1. It is true because 12 inch is equal to 1 feet, so the area of each side of the cube is 1 square feet, adding the 6 sides of the cube you have a surface area of 6 square feet.
2. It is false because 7.5 gallons is equal to 1 cubic foot.
3. It is true because both cones have equal height but the fact that the bases are different make the volume different.
4. Is false because when you calculate the volume of a sphere you have to raise the radius (half the diameter) to the cube, so there is not a direct relation.