twin2532 twin2532
  • 01-08-2018
  • Mathematics
contestada

whats the radius of a circle with an area of 123 square feet?

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reneestoddart20
reneestoddart20 reneestoddart20
  • 01-08-2018

the answer is 6.26 feet

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sarajevo
sarajevo sarajevo
  • 01-08-2018

The are of the circle is 123 square feet.

As we know that the area of the circle is given by

[tex] A=\pi r^2\\\\Substitute \ the \ value \ of \ the \ area \ we \ get:\\\\123=\pi r^2\\\\r^2=\frac{123}{\pi} \\\\\r=\sqrt{\frac{123}{\pi} } =6.26ft\\\\ [/tex]

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