1 Answer

Webaddicted · Answer 1 · 2023-11-26T11:14:21+0000

For this exercise you need to remember that the circumference of a circle can be calculated with this formula:

$C=2\pi r$

Where "r" is the radius of the circle.

In this case, you know that the circumference of the circle is:

Then, you can substitute this value into the formula and solve for "r". This is:

$\begin{gathered} C=2\pi r \\ 21.2ft=2\pi r \\ \\ (21.2ft)/(2\pi)=r \\ \\ r\approx3.37ft \end{gathered}$

You can find the diameter by multiplying the radius by 2. Then, this is:

$\begin{gathered} d=(2)(3.37ft) \\ d\approx6.74ft \end{gathered}$

The answers are:

$\begin{gathered} d\approx6.74ft \\ r\approx3.37ft \end{gathered}$

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