Respuesta :

dasetka
             A = 4πr²          Divide both sides by 4π
     A / 4π = r²               Find the square root of both sides
√(A / 4π) = √(r²)          Cancel out the square with the square root
√(A / 4π) = r                Switch the sides to make it easier to read
              r = √(A / 4π)

Answer:

Step-by-step explanation:

A = 4πr² Divide both sides by 4π

A / 4π = r² Find the square root of both sides

√(A / 4π) = √(r²) Cancel out the square with the square root

√(A / 4π) = r Switch the sides to make it easier to read

r = √(A / 4π)

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