6. A helicopter pad has a circumference of \( 47 \frac{1}{2} \) yards. Find the approximate diameter of the helicopter pad. Use 3.14 for \( \pi \). Write your answer as a decimal rounded to the nearest hundredth if necessary. (Example 3)
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To find the diameter of the helicopter pad, you can use the formula for the circumference of a circle: \( C = \pi \times d \). Given that the circumference \( C \) is \( 47 \frac{1}{2} \) yards (which is 47.5 yards), you can rearrange the formula to find the diameter \( d \) as follows: \[ d = \frac{C}{\pi} = \frac{47.5}{3.14} \approx 15.12 \text{ yards}. \] So, the diameter of the helicopter pad is approximately 15.12 yards. Now, if you’re wondering why we often use \( \pi \) as 3.14, it's because that's an easy approximation for a lot of everyday calculations, allowing us to avoid complex decimals while still getting fairly accurate results. This makes it handy for quick estimates! Also, when rounding your final answer, remember that looking at the digit in the thousandths place can help you determine whether you round up or down. So since 15.12 has a '2', it remains 15.12. Just another reason why being careful with rounding can save you from embarrassing errors!