Solve for the Indicated Variable $c = 9 \sqrt { r }$

question 291

Multiple Choice

Solve for the indicated variable.
- $c = 9 \sqrt { r }$ for $r$

• A) \(r = \frac { c ^ { 2 } } { 81 }\)
• B) \(r = \frac { c } { 81 }\)
• C) \(r = \frac { c ^ { 2 } } { 9 }\)
• D) \(r = \frac { c } { 9 }\)

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