17dalshoubaki
17dalshoubaki 17dalshoubaki
  • 28-12-2017
  • Mathematics
contestada

Find the area of a circle with a circumference of 12π


Either enter an exact answer in terms of or use 3.14 and enter your answer as a decimal.

Respuesta :

whymateplz whymateplz
  • 28-12-2017
A=[tex] \pi [/tex]r2
Answer Link
eTangent
eTangent eTangent
  • 28-12-2017
First you gotta remember the equation:

[tex]Area = \pi {r}^{2} [/tex]

And also this equation to find r:

[tex]circumfrnce = 2\pi{r}[/tex]

To find r, let's plug in whatever we know about the circumference!

[tex]12\pi = 2\pi{r}[/tex]

We will find that r = 6. Now we can plug this into the 1st equation to find the area!

[tex]A = \pi {(6)}^{2} = 36\pi[/tex]
Answer Link

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