What si the circumfrence for a circle with a radius of 2.5 feet estimate the circumfrence to the tenths place using 3.14 for pi

3 answers

To calculate the circumference of a circle, you can use the formula:

\[ C = 2 \pi r \]

where \(C\) is the circumference and \(r\) is the radius. Given that the radius \(r\) is 2.5 feet and using \( \pi \approx 3.14\):

\[ C = 2 \times 3.14 \times 2.5 \]

First, calculate \(2 \times 2.5\):

\[ 2 \times 2.5 = 5 \]

Now, multiply this by \(3.14\):

\[ C = 5 \times 3.14 = 15.7 \]

So the estimated circumference of the circle is \(15.7\) feet, rounded to the tenths place.

you sure?????

Yes, let's double-check the calculation step by step.

To find the circumference \(C\) using the formula \(C = 2 \pi r\), with \(r = 2.5\) feet and using \(\pi \approx 3.14\):

  1. Calculate \(2 \times 2.5\): \[ 2 \times 2.5 = 5 \]

  2. Now multiply by \(3.14\): \[ C = 5 \times 3.14 = 15.7 \]

Thus, the calculated circumference of the circle is indeed \(15.7\) feet.

If you have any specific concerns or questions regarding the calculation, feel free to ask!