MELMED1217 MELMED1217
  • 10-03-2019
  • Mathematics
contestada

Area of circle is 113.1 ft square. What is diameter?

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Kamikazeminem
Kamikazeminem Kamikazeminem
  • 10-03-2019

[tex]A = \pi {r}^{2} = \pi {( \frac{d}{2}) }^{2} =\pi \frac{ {d}^{2} }{4} \Rightarrow d = \sqrt{ \frac{4A}{\pi} } \\ \Leftrightarrow d = \sqrt{ \frac{4 \times 113.1}{\pi} } = \sqrt{ \frac{452.4}{\pi} } \approx12 \: ft[/tex]

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harygakes80
harygakes80 harygakes80
  • 10-03-2019
Bro the diameter is 12 ft.
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good job