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What's the radius of a circle with area 9π units2? A) 81 units B) 9 units C) 3 units D) 18 units

Respuesta :

sqdancefan

Answer:

  C)  3 units

Explanation:

The area is given by the formula ...

  A = πr²

Fill in the given value for area and solve for r:

  9π = πr²

  9 = r² . . . . . . . . divide by pi

  √9 = r = 3 . . . . take the square root

The radius is 3 units.

janlee113

Answer:

C. 3 units

Explanation:

hope it helps

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