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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)

Ask by Davies Kelly. in the United States
Feb 04,2025

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Answer

The approximate diameter of the helicopter pad is 15.13 yards.

Solution

To find the approximate diameter of the helicopter pad, we can use the formula for the circumference of a circle: \[ C = \pi \times d \] Given that the circumference of the helicopter pad is \( 47 \frac{1}{2} \) yards, we can substitute this value into the formula: \[ 47 \frac{1}{2} = \pi \times d \] Since we are using 3.14 for \( \pi \), we can substitute this value into the equation: \[ 47 \frac{1}{2} = 3.14 \times d \] Now, we can solve for \( d \) by dividing both sides of the equation by 3.14: \[ d = \frac{47 \frac{1}{2}}{3.14} \] Let's calculate the value of \( d \) using the given information. Calculate the value by following steps: - step0: Calculate: \(47\frac{1}{2}\) - step1: Alternative Form: \(47.5\) Calculate or simplify the expression \( 47.5/3.14 \). Calculate the value by following steps: - step0: Calculate: \(\frac{47.5}{3.14}\) - step1: Convert the expressions: \(\frac{\frac{95}{2}}{\frac{157}{50}}\) - step2: Multiply by the reciprocal: \(\frac{95}{2}\times \frac{50}{157}\) - step3: Reduce the numbers: \(95\times \frac{25}{157}\) - step4: Multiply: \(\frac{95\times 25}{157}\) - step5: Multiply: \(\frac{2375}{157}\) The approximate diameter of the helicopter pad is \( 15.13 \) yards when rounded to the nearest hundredth.

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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!

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