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14-05-2015
Mathematics

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17 points

If the radius of the circle above is 9 in, what is the area of the circle?

18 sq in

9 sq in

324 sq in

81 sq in

17 points If the radius of the circle above is 9 in what is the area of the circle 18 sq in 9 sq in 324 sq in 81 sq in class=

Respuesta :

14-05-2015

The area of any circle is (pi) x (the radius squared).

If a circle's radius is 9, then the area is (pi) x (9 squared) = 81 pi .

81 pi is around 250. None of the choices listed is anywhere close to 250.

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