gibsonj338

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 #1
avatar+1904 
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To find the diameter of the circle with only the area known, use the formula \(A=\pi\times{r}^{2}\) where \(A=Area\), \(\pi≈3.1415926535897932\), \(r=radius\).  We know that Area is equal to \({56.75in}^{2}\)and we know that \(\pi≈3.1415926535897932\), but we do not know what the radius is equal to.  In order to figure out what the radius is equal to, solve for r and then plug in what we know.

 

\(A=\pi\times{r}^{2}\)

 

\(\frac{A}{\pi}=\frac{\pi\times{r}^{2}}{\pi}\)

 

\(\frac{A}{\pi}=1\times{r}^{2}\)

 

\(\frac{A}{\pi}={r}^{2}\)

 

\(\sqrt{\frac{A}{\pi}}=\sqrt{{r}^{2}}\)

 

\(\sqrt{\frac{A}{\pi}}=r\)

 

\(r=\sqrt{\frac{A}{\pi}}\)

 

\(r=\frac{\sqrt{A}}{\sqrt{\pi}}\)

 

\(r=\frac{\sqrt{A}}{\sqrt{\pi}}\times\frac{\sqrt{\pi}}{\sqrt{\pi}}\)

 

\(r=\frac{\sqrt{A}\sqrt{\pi}}{\sqrt{\pi}\sqrt{\pi}}\)

 

\(r=\frac{\sqrt{A\pi}}{\sqrt{\pi}\sqrt{\pi}}\)

 

\(r=\frac{\sqrt{A\pi}}{\sqrt{\pi\pi}}\)

 

\(r=\frac{\sqrt{A\pi}}{\sqrt{{\pi}^{2}}}\)

 

\(r=\frac{\sqrt{A\pi}}{\pi}\)

 

\(r=\frac{\sqrt{56.75\pi}}{\pi}\)

 

\(r≈\frac{\sqrt{56.75\times3.1415926535897932}}{3.1415926535897932}\)

 

\(r≈\frac{\sqrt{178.2853830912207641}}{3.1415926535897932}\)

 

\(r≈\frac{13.3523549642458488717}{3.1415926535897932}\)

 

\(r≈4.2501865889546685678486\)

 

Now we know that the radius is approximately equal to \(4.2501865889546685678486\); however, we want to know what the diamanter of the circle is, not the radius.  In order to find the diamater, use the formula \(d=2r\) where \(d=diamater\), \(r=radius\).

 

\(d=2r\)

 

\(d≈2\times4.2501865889546685678486\)

 

\(d≈8.5003731779093371356972\)

 

The diameter of a circle wth an area of \({56.75in}^{2}\) is approximately equal to \(8.5003731779093371356972\).

Nov 8, 2016
 #1
avatar+1904 
+3

If you mean \(({\frac{1}{3})}^{11}\)

 

\(({\frac{1}{3})}^{11}\)

 

\(\frac{{1}^{11}}{{3}^{11}}\)

 

\(\frac{1\times1\times1\times1\times1\times1\times1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1\times1\times1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1\times1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1\times1}{{}^{{3}^{11}}}\)

 

\(\frac{1}{{}^{{3}^{11}}}\)

 

\(\frac{1}{3\times3\times3\times3\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{9\times3\times3\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{27\times3\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{81\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{243\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{729\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{2187\times3\times3\times3\times3}\)

 

\(\frac{1}{6561\times3\times3\times3}\)

 

\(\frac{1}{19683\times3\times3}\)

 

\(\frac{1}{59049\times3}\)

 

\(\frac{1}{177147}\)

 

\(0.0000056450292695\)

 

If you mean \(\frac{1}{{3}^{11}}\)

 

\(\frac{1}{3\times3\times3\times3\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{9\times3\times3\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{27\times3\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{81\times3\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{243\times3\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{729\times3\times3\times3\times3\times3}\)

 

\(\frac{1}{2187\times3\times3\times3\times3}\)

 

\(\frac{1}{6561\times3\times3\times3}\)

 

\(\frac{1}{19683\times3\times3}\)

 

\(\frac{1}{59049\times3}\)

 

\(\frac{1}{177147}\)

 

\(0.0000056450292695\)

.
Nov 2, 2016