Multiple choice What is the volume of a cone if its radius is 6.9 inches and height is 10 inches? 408.3 in3 421.8 in3 442.7 in3 498.3 in3 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Volume of cone = (1/3) * pi * r^2 * h = (1/3) * 3.14159 * 6.9^2 * 10 = (1/3) * 3.14159 * 47.61 * 10 = 498.34.