Solve the Formula for the Indicated Letter $x = \sqrt { r ^ { 2 } - y ^ { 2 } }$

question 67

Multiple Choice

Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.
- $x = \sqrt { r ^ { 2 } - y ^ { 2 } }$ for $r$

• A) \(r = \sqrt { x ^ { 2 } - y ^ { 2 } }\)
• B) \(r = \sqrt { x + y }\)
• C) \(r = x + y\)
• D) \(r = \sqrt { x ^ { 2 } + y ^ { 2 } }\)

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