Find the Length of a Radius of Each Circle $r = \sqrt { 19 }$

question 98

Multiple Choice

Find the length of a radius of each circle. Match each of the equations with length of a radius to obtain a true statement.
- $r = \sqrt { 19 }$

• A) \(x ^ { 2 } + y ^ { 2 } = 3\)
• B) \(x ^ { 2 } + y ^ { 2 } + 14 x + 6 y + 39 = 0\)
• C) \(x ^ { 2 } + y ^ { 2 } - 12 x + 20 y + 101 = 0\)
• D) \(x ^ { 2 } + y ^ { 2 } + 24 x - 32 y = 0\)

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