28. The wheels on Jason's dirt bike measure 19 inches in diameter. How many revolutions will the wheels make when Jason rides for 500 feet? Use 3.14 for \( \pi \). Round to the nearest whole revolution.
(A) 8 revolutions
(B) 21 revolutions
(C) 101 revolutions
(D) 316 revolutions

Answer

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Answer

\(\text{rounded revolutions} = \lfloor \text{revolutions} \rceil = 316\)

Steps

Step 1 ：\(C = \pi d = 3.14 \times 19\ inches \)

Step 2 ：\(\text{revolutions} = \frac{\text{distance traveled}}{C} = \frac{500 \times 12}{3.14 \times 19}\)

Step 3 ：\(\text{rounded revolutions} = \lfloor \text{revolutions} \rceil = 316\)