Final answer:
The volume of a cone with a radius of 1.25 inches and height of 5 inches is approximately 8.18 cubic inches, which is closest to choice D. V = 7.81 cubic inches.
Step-by-step explanation:
The student is asking for the volume of a cone, which can be calculated using the formula V = 1/3πr²h, where r is the radius and h is the height of the cone. Plugging in the given values of a radius of 1.25 inches and a height of 5 inches into the formula results in V = 1/3π×(1.25)"^2×5" which simplifies to approximately V = 8.18 cubic inches.
Therefore, the most accurate answer from the choices provided is D. V = 7.81 cubic inches.