Question 7 • Foundations of Math 1
Use the cone volume formula, V = (1/3)πr²h. Substituting the given values gives r² = (3 × 153.86) ÷ (3.14 × 12) = 12.25, so r = √12.25 = 3.5 inches. The radius is 3.5 inches, choice B.
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